Dr. Daphna Stroumsa is a fellow in the National Clinician Scholars Program and a clinical lecturer in obstetrics and gynecology at the University of Michigan. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. D. Stroumsa and Others. The Power and Limits of Classification — A 32-Year-Old Man with Abdominal Pain. N Engl J Med 2019;380:1885-1888.