Jerry Avorn, M.D., is an associate professor of medicine at Harvard Medical School and chief of the Division of Pharmacoepidemiology and Pharmacoeconomics at Brigham and Women’s Hospital in Boston. An internist, geriatrician, and drug researcher, he is the author of more than two hundred papers in the medical literature on medication use and its outcomes, and one of the most frequently cited researchers in the fields of social science and medicine.