Hydroxychloroquine early in pregnancy and risk of birth defects: absence of evidence is not the same as evidence of absence

Affiliations

• ¹ Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 1620 Tremont St., Suite 3030, Boston, MA 02120; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA. Electronic address: khuybrechts@bwh.harvard.edu.
• ² Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA; Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.
• ³ Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.