Loading…
Prevalences of endoscopic and histological findings in subjects with and without dyspepsia
OBJECTIVE--To examine the association between dyspeptic symptoms and endoscopic and histological diagnoses. DESIGN--Cross sectional study of people with dyspepsia and controls matched for age and sex identified by questionnaire survey of all inhabitants aged 20 to 69. Endoscopy and histological exam...
Saved in:
Published in: | BMJ 1991-03, Vol.302 (6779), p.749-752 |
---|---|
Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
cited_by | cdi_FETCH-LOGICAL-b515t-853f9f5887445bd86d5af2a8cfa334d8803dbb412b1edb5a61cdbdf357c989933 |
---|---|
cites | cdi_FETCH-LOGICAL-b515t-853f9f5887445bd86d5af2a8cfa334d8803dbb412b1edb5a61cdbdf357c989933 |
container_end_page | 752 |
container_issue | 6779 |
container_start_page | 749 |
container_title | BMJ |
container_volume | 302 |
creator | Johnsen, R Bernersen, B Straume, B Førde, O H Bostad, L Burhol, P G |
description | OBJECTIVE--To examine the association between dyspeptic symptoms and endoscopic and histological diagnoses. DESIGN--Cross sectional study of people with dyspepsia and controls matched for age and sex identified by questionnaire survey of all inhabitants aged 20 to 69. Endoscopy and histological examination was performed with the examiner blind to whether or not the patient had dyspepsia. SETTING--Population based survey in Sørreisa, Norway. SUBJECTS--All people with dyspepsia and age and sex matched people without dyspepsia were offered endoscopy. A total of 309 people with dyspepsia and 310 without dyspepsia underwent endoscopy, giving 273 matched pairs. MAIN OUTCOME MEASURES--Prevalences of endoscopic and histological diagnoses made according to internationally accepted standards. RESULTS--In all, 1802 of 2027 (88.9%) people returned the questionnaire. Of the 163 subjects who refused endoscopy, 114 were controls. Of five endoscopic and four histological diagnoses only peptic ulcer disease, endoscopic duodenitis, and active chronic gastritis were diagnosed significantly more often in people with dyspepsia. In all, 30% to 50% of the diagnoses of mucosal inflammation and peptic ulcer disease were made among subjects without dyspepsia, and only 10% of both those with and those without dyspepsia had normal endoscopic findings. CONCLUSIONS--The diagnostic findings, with possible exceptions of peptic ulcer disease and endoscopic duodenitis, showed no association of clinical value with dyspeptic symptoms. The small number of "normal" endoscopic findings in both those with and those without dyspepsia challenge well accepted endoscopic and histological diagnostic criteria with relation to the upper gastrointestinal tract. |
doi_str_mv | 10.1136/bmj.302.6779.749 |
format | article |
fullrecord | <record><control><sourceid>jstor_pubme</sourceid><recordid>TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_1669538</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><jstor_id>29710925</jstor_id><sourcerecordid>29710925</sourcerecordid><originalsourceid>FETCH-LOGICAL-b515t-853f9f5887445bd86d5af2a8cfa334d8803dbb412b1edb5a61cdbdf357c989933</originalsourceid><addsrcrecordid>eNqFkUuLFDEUhYMoYzPO3o1QILiRavOovDaCNjoKg4roIG5CXtWdtjopK1XjzL-flN30qBtXCZxzT87NB8BjBJcIEfbC7LZLAvGScS6XvJH3wAI1TNRUEHIfLKCkshaIiIfgLOcthBATLiSjJ-AEQ4w4axbg-6fBX-nOR-tzldrKR5eyTX2wlY6u2oQ8pi6tg9Vd1YboQlznKsQqT2br7ZirX2Hc_LbOlzSNlbvJve9z0I_Ag1Z32Z8dzlPw9e2bL6t39cXH8_erVxe1oYiOtaCklS0VgjcNNU4wR3WLtbCtJqRxQkDijGkQNsg7QzVD1hnXEsqtFFIScgpe7nP7yey8sz6Og-5UP4SdHm5U0kH9rcSwUet0pRBjkhJRAp4dAob0c_J5VLuQre86HX2ashKQYok5Lcan_xi3aRpiWU4hXr6TMIhZccG9yw4p58G3xyoIqhmcKuBUAadmcKqAKyNP_lzhOHDAdKdvC47hTpYcQYnnYvVeL7j89VHXw4_yBuFUfbhcqeZSnMPPr7H6VvzP9_65yX_b3QLzVrxa</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1776436026</pqid></control><display><type>article</type><title>Prevalences of endoscopic and histological findings in subjects with and without dyspepsia</title><source>JSTOR Archival Journals and Primary Sources Collection【Remote access available】</source><source>BMJ Publishing</source><creator>Johnsen, R ; Bernersen, B ; Straume, B ; Førde, O H ; Bostad, L ; Burhol, P G</creator><creatorcontrib>Johnsen, R ; Bernersen, B ; Straume, B ; Førde, O H ; Bostad, L ; Burhol, P G</creatorcontrib><description>OBJECTIVE--To examine the association between dyspeptic symptoms and endoscopic and histological diagnoses. DESIGN--Cross sectional study of people with dyspepsia and controls matched for age and sex identified by questionnaire survey of all inhabitants aged 20 to 69. Endoscopy and histological examination was performed with the examiner blind to whether or not the patient had dyspepsia. SETTING--Population based survey in Sørreisa, Norway. SUBJECTS--All people with dyspepsia and age and sex matched people without dyspepsia were offered endoscopy. A total of 309 people with dyspepsia and 310 without dyspepsia underwent endoscopy, giving 273 matched pairs. MAIN OUTCOME MEASURES--Prevalences of endoscopic and histological diagnoses made according to internationally accepted standards. RESULTS--In all, 1802 of 2027 (88.9%) people returned the questionnaire. Of the 163 subjects who refused endoscopy, 114 were controls. Of five endoscopic and four histological diagnoses only peptic ulcer disease, endoscopic duodenitis, and active chronic gastritis were diagnosed significantly more often in people with dyspepsia. In all, 30% to 50% of the diagnoses of mucosal inflammation and peptic ulcer disease were made among subjects without dyspepsia, and only 10% of both those with and those without dyspepsia had normal endoscopic findings. CONCLUSIONS--The diagnostic findings, with possible exceptions of peptic ulcer disease and endoscopic duodenitis, showed no association of clinical value with dyspeptic symptoms. The small number of "normal" endoscopic findings in both those with and those without dyspepsia challenge well accepted endoscopic and histological diagnostic criteria with relation to the upper gastrointestinal tract.</description><identifier>ISSN: 0959-8138</identifier><identifier>EISSN: 1468-5833</identifier><identifier>EISSN: 1756-1833</identifier><identifier>DOI: 10.1136/bmj.302.6779.749</identifier><identifier>PMID: 2021764</identifier><language>eng</language><publisher>England: British Medical Journal Publishing Group</publisher><subject>Adult ; Aged ; Biopsy ; Cross-Sectional Studies ; Digestive System - pathology ; Digestive System Diseases - complications ; Digestive System Diseases - pathology ; Duodenal diseases ; Duodenitis ; Duodenitis - diagnosis ; Duodenitis - pathology ; Dyspepsia ; Dyspepsia - diagnosis ; Dyspepsia - epidemiology ; Dyspepsia - etiology ; Endoscopy ; Endoscopy, Digestive System ; Epidemiology ; Esophagitis - diagnosis ; Esophagitis - pathology ; Female ; Gastritis ; Gastritis - diagnosis ; Gastritis - pathology ; Histology ; Humans ; Inflammation ; Male ; Middle Aged ; Peptic ulcer ; Peptic Ulcer - diagnosis ; Peptic Ulcer - pathology ; Symptoms</subject><ispartof>BMJ, 1991-03, Vol.302 (6779), p.749-752</ispartof><rights>Copyright 1991 British Medical Journal</rights><rights>Copyright BMJ Publishing Group LTD Mar 30, 1991</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b515t-853f9f5887445bd86d5af2a8cfa334d8803dbb412b1edb5a61cdbdf357c989933</citedby><cites>FETCH-LOGICAL-b515t-853f9f5887445bd86d5af2a8cfa334d8803dbb412b1edb5a61cdbdf357c989933</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttp://bmj.com/content/302/6779/749.full.pdf$$EPDF$$P50$$Gbmj$$H</linktopdf><linktohtml>$$Uhttp://bmj.com/content/302/6779/749.full$$EHTML$$P50$$Gbmj$$H</linktohtml><link.rule.ids>112,113,230,314,780,784,885,3192,27923,27924,58237,58470,77365,77366</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/2021764$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Johnsen, R</creatorcontrib><creatorcontrib>Bernersen, B</creatorcontrib><creatorcontrib>Straume, B</creatorcontrib><creatorcontrib>Førde, O H</creatorcontrib><creatorcontrib>Bostad, L</creatorcontrib><creatorcontrib>Burhol, P G</creatorcontrib><title>Prevalences of endoscopic and histological findings in subjects with and without dyspepsia</title><title>BMJ</title><addtitle>BMJ</addtitle><description>OBJECTIVE--To examine the association between dyspeptic symptoms and endoscopic and histological diagnoses. DESIGN--Cross sectional study of people with dyspepsia and controls matched for age and sex identified by questionnaire survey of all inhabitants aged 20 to 69. Endoscopy and histological examination was performed with the examiner blind to whether or not the patient had dyspepsia. SETTING--Population based survey in Sørreisa, Norway. SUBJECTS--All people with dyspepsia and age and sex matched people without dyspepsia were offered endoscopy. A total of 309 people with dyspepsia and 310 without dyspepsia underwent endoscopy, giving 273 matched pairs. MAIN OUTCOME MEASURES--Prevalences of endoscopic and histological diagnoses made according to internationally accepted standards. RESULTS--In all, 1802 of 2027 (88.9%) people returned the questionnaire. Of the 163 subjects who refused endoscopy, 114 were controls. Of five endoscopic and four histological diagnoses only peptic ulcer disease, endoscopic duodenitis, and active chronic gastritis were diagnosed significantly more often in people with dyspepsia. In all, 30% to 50% of the diagnoses of mucosal inflammation and peptic ulcer disease were made among subjects without dyspepsia, and only 10% of both those with and those without dyspepsia had normal endoscopic findings. CONCLUSIONS--The diagnostic findings, with possible exceptions of peptic ulcer disease and endoscopic duodenitis, showed no association of clinical value with dyspeptic symptoms. The small number of "normal" endoscopic findings in both those with and those without dyspepsia challenge well accepted endoscopic and histological diagnostic criteria with relation to the upper gastrointestinal tract.</description><subject>Adult</subject><subject>Aged</subject><subject>Biopsy</subject><subject>Cross-Sectional Studies</subject><subject>Digestive System - pathology</subject><subject>Digestive System Diseases - complications</subject><subject>Digestive System Diseases - pathology</subject><subject>Duodenal diseases</subject><subject>Duodenitis</subject><subject>Duodenitis - diagnosis</subject><subject>Duodenitis - pathology</subject><subject>Dyspepsia</subject><subject>Dyspepsia - diagnosis</subject><subject>Dyspepsia - epidemiology</subject><subject>Dyspepsia - etiology</subject><subject>Endoscopy</subject><subject>Endoscopy, Digestive System</subject><subject>Epidemiology</subject><subject>Esophagitis - diagnosis</subject><subject>Esophagitis - pathology</subject><subject>Female</subject><subject>Gastritis</subject><subject>Gastritis - diagnosis</subject><subject>Gastritis - pathology</subject><subject>Histology</subject><subject>Humans</subject><subject>Inflammation</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Peptic ulcer</subject><subject>Peptic Ulcer - diagnosis</subject><subject>Peptic Ulcer - pathology</subject><subject>Symptoms</subject><issn>0959-8138</issn><issn>1468-5833</issn><issn>1756-1833</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNqFkUuLFDEUhYMoYzPO3o1QILiRavOovDaCNjoKg4roIG5CXtWdtjopK1XjzL-flN30qBtXCZxzT87NB8BjBJcIEfbC7LZLAvGScS6XvJH3wAI1TNRUEHIfLKCkshaIiIfgLOcthBATLiSjJ-AEQ4w4axbg-6fBX-nOR-tzldrKR5eyTX2wlY6u2oQ8pi6tg9Vd1YboQlznKsQqT2br7ZirX2Hc_LbOlzSNlbvJve9z0I_Ag1Z32Z8dzlPw9e2bL6t39cXH8_erVxe1oYiOtaCklS0VgjcNNU4wR3WLtbCtJqRxQkDijGkQNsg7QzVD1hnXEsqtFFIScgpe7nP7yey8sz6Og-5UP4SdHm5U0kH9rcSwUet0pRBjkhJRAp4dAob0c_J5VLuQre86HX2ashKQYok5Lcan_xi3aRpiWU4hXr6TMIhZccG9yw4p58G3xyoIqhmcKuBUAadmcKqAKyNP_lzhOHDAdKdvC47hTpYcQYnnYvVeL7j89VHXw4_yBuFUfbhcqeZSnMPPr7H6VvzP9_65yX_b3QLzVrxa</recordid><startdate>19910330</startdate><enddate>19910330</enddate><creator>Johnsen, R</creator><creator>Bernersen, B</creator><creator>Straume, B</creator><creator>Førde, O H</creator><creator>Bostad, L</creator><creator>Burhol, P G</creator><general>British Medical Journal Publishing Group</general><general>British Medical Association</general><general>BMJ Publishing Group LTD</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7X7</scope><scope>7XB</scope><scope>88I</scope><scope>8AF</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ASE</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BTHHO</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FPQ</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>K6X</scope><scope>K9.</scope><scope>LK8</scope><scope>M2O</scope><scope>M2P</scope><scope>M7P</scope><scope>MBDVC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>19910330</creationdate><title>Prevalences of endoscopic and histological findings in subjects with and without dyspepsia</title><author>Johnsen, R ; Bernersen, B ; Straume, B ; Førde, O H ; Bostad, L ; Burhol, P G</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-b515t-853f9f5887445bd86d5af2a8cfa334d8803dbb412b1edb5a61cdbdf357c989933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Biopsy</topic><topic>Cross-Sectional Studies</topic><topic>Digestive System - pathology</topic><topic>Digestive System Diseases - complications</topic><topic>Digestive System Diseases - pathology</topic><topic>Duodenal diseases</topic><topic>Duodenitis</topic><topic>Duodenitis - diagnosis</topic><topic>Duodenitis - pathology</topic><topic>Dyspepsia</topic><topic>Dyspepsia - diagnosis</topic><topic>Dyspepsia - epidemiology</topic><topic>Dyspepsia - etiology</topic><topic>Endoscopy</topic><topic>Endoscopy, Digestive System</topic><topic>Epidemiology</topic><topic>Esophagitis - diagnosis</topic><topic>Esophagitis - pathology</topic><topic>Female</topic><topic>Gastritis</topic><topic>Gastritis - diagnosis</topic><topic>Gastritis - pathology</topic><topic>Histology</topic><topic>Humans</topic><topic>Inflammation</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Peptic ulcer</topic><topic>Peptic Ulcer - diagnosis</topic><topic>Peptic Ulcer - pathology</topic><topic>Symptoms</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Johnsen, R</creatorcontrib><creatorcontrib>Bernersen, B</creatorcontrib><creatorcontrib>Straume, B</creatorcontrib><creatorcontrib>Førde, O H</creatorcontrib><creatorcontrib>Bostad, L</creatorcontrib><creatorcontrib>Burhol, P G</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>STEM Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>British Nursing Index</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Databases</collection><collection>Natural Science Collection</collection><collection>BMJ Journals</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>British Nursing Index (BNI) (1985 to Present)</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>British Nursing Index</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Biological Sciences</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Biological Science Database</collection><collection>Research Library (Corporate)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>ProQuest Central Basic</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>BMJ</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Johnsen, R</au><au>Bernersen, B</au><au>Straume, B</au><au>Førde, O H</au><au>Bostad, L</au><au>Burhol, P G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Prevalences of endoscopic and histological findings in subjects with and without dyspepsia</atitle><jtitle>BMJ</jtitle><addtitle>BMJ</addtitle><date>1991-03-30</date><risdate>1991</risdate><volume>302</volume><issue>6779</issue><spage>749</spage><epage>752</epage><pages>749-752</pages><issn>0959-8138</issn><eissn>1468-5833</eissn><eissn>1756-1833</eissn><abstract>OBJECTIVE--To examine the association between dyspeptic symptoms and endoscopic and histological diagnoses. DESIGN--Cross sectional study of people with dyspepsia and controls matched for age and sex identified by questionnaire survey of all inhabitants aged 20 to 69. Endoscopy and histological examination was performed with the examiner blind to whether or not the patient had dyspepsia. SETTING--Population based survey in Sørreisa, Norway. SUBJECTS--All people with dyspepsia and age and sex matched people without dyspepsia were offered endoscopy. A total of 309 people with dyspepsia and 310 without dyspepsia underwent endoscopy, giving 273 matched pairs. MAIN OUTCOME MEASURES--Prevalences of endoscopic and histological diagnoses made according to internationally accepted standards. RESULTS--In all, 1802 of 2027 (88.9%) people returned the questionnaire. Of the 163 subjects who refused endoscopy, 114 were controls. Of five endoscopic and four histological diagnoses only peptic ulcer disease, endoscopic duodenitis, and active chronic gastritis were diagnosed significantly more often in people with dyspepsia. In all, 30% to 50% of the diagnoses of mucosal inflammation and peptic ulcer disease were made among subjects without dyspepsia, and only 10% of both those with and those without dyspepsia had normal endoscopic findings. CONCLUSIONS--The diagnostic findings, with possible exceptions of peptic ulcer disease and endoscopic duodenitis, showed no association of clinical value with dyspeptic symptoms. The small number of "normal" endoscopic findings in both those with and those without dyspepsia challenge well accepted endoscopic and histological diagnostic criteria with relation to the upper gastrointestinal tract.</abstract><cop>England</cop><pub>British Medical Journal Publishing Group</pub><pmid>2021764</pmid><doi>10.1136/bmj.302.6779.749</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
fulltext | fulltext |
identifier | ISSN: 0959-8138 |
ispartof | BMJ, 1991-03, Vol.302 (6779), p.749-752 |
issn | 0959-8138 1468-5833 1756-1833 |
language | eng |
recordid | cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_1669538 |
source | JSTOR Archival Journals and Primary Sources Collection【Remote access available】; BMJ Publishing |
subjects | Adult Aged Biopsy Cross-Sectional Studies Digestive System - pathology Digestive System Diseases - complications Digestive System Diseases - pathology Duodenal diseases Duodenitis Duodenitis - diagnosis Duodenitis - pathology Dyspepsia Dyspepsia - diagnosis Dyspepsia - epidemiology Dyspepsia - etiology Endoscopy Endoscopy, Digestive System Epidemiology Esophagitis - diagnosis Esophagitis - pathology Female Gastritis Gastritis - diagnosis Gastritis - pathology Histology Humans Inflammation Male Middle Aged Peptic ulcer Peptic Ulcer - diagnosis Peptic Ulcer - pathology Symptoms |
title | Prevalences of endoscopic and histological findings in subjects with and without dyspepsia |
url | http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-12T02%3A01%3A01IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstor_pubme&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Prevalences%20of%20endoscopic%20and%20histological%20findings%20in%20subjects%20with%20and%20without%20dyspepsia&rft.jtitle=BMJ&rft.au=Johnsen,%20R&rft.date=1991-03-30&rft.volume=302&rft.issue=6779&rft.spage=749&rft.epage=752&rft.pages=749-752&rft.issn=0959-8138&rft.eissn=1468-5833&rft_id=info:doi/10.1136/bmj.302.6779.749&rft_dat=%3Cjstor_pubme%3E29710925%3C/jstor_pubme%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-b515t-853f9f5887445bd86d5af2a8cfa334d8803dbb412b1edb5a61cdbdf357c989933%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=1776436026&rft_id=info:pmid/2021764&rft_jstor_id=29710925&rfr_iscdi=true |