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National Centers for Discease Control (CDC), Division of Tuberculosis Elimination. No. 1, 2000 The First TB Drug Clinical Trials by Rick O'Brien, MD Chief, Research and Evaluation Branch, DTBE and George Comstock, MD, DrPH, FACE Alumni Centennial Professor of Epidemiology Johns Hopkins University School of Hygiene and Public Health http://www.cdc.gov/nchstp/tb/notes/TBN_1_00/TBN2000obrien.htm