Yih W Katherine, Maro Judith C, Kulldorff Martin
Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts.
Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, Massachusetts.
Am J Epidemiol. 2018 Jun 1;187(6):1281. doi: 10.1093/aje/kwy022.