Sensitivity and positive predictive value of medicare part B physician claims for rheumatologic diagnoses and procedures by Katz, Jeffrey N., Barrett, Jane, Liang, Matthew H., Bacon, Aane M., Kaplan, Herbert, Kieval, Raphael I., Lindsey, Stephen M., Roberts, W. Neal, Sheff, Daniel M., Spencer, Robert T., Weaver, Arthur L., Baron, John A.

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