Liquid nitrogen spray cryotherapy in Barrett's esophagus with high-grade dysplasia: long-term results by Gosain, Sonia, MD, Mercer, Kim, RN, Twaddell, William S., MD, Uradomo, Lance, MD, MPH, Greenwald, Bruce D., MD

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Endoscopic diagnosis of a biliary neuroendocrine tumor by Malecki, Elise A., MD, PhD, Acosta, Ruben, MD, Twaddell, William, MD, Heller, Todd, MD, Manning, Maria A., MD, Darwin, Peter, MD

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A 40-Year-Old Man With a Perforated Cheek by Silva, Kathryn N., MD, Twaddell, William S., MD, Powers, David B., DMD, MD, Mackowiak, Philip A., MD, Frayha, Neda, MD, Silhan, Leann L., MD

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