Division of Maternal-Fetal Medicine, the Deborah Kelly Center for Outcomes Research, and the Division of Nurse-Midwifery, the Department of Obstetrics and Gynecology, and the Division of Obstetric Anesthesia, the Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, and the Division of Obstetric Anesthesia, Department of Anesthesia, Critical Care, and Pain Medicine, and the Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts.
Corresponding author: Malavika Prabhu, MD, Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Massachusetts General Hospital, 55 Fruit Street, Founders 460, Boston, MA 02114; email: [email protected].
Financial Disclosure The authors did not report any potential conflicts of interest.
Each author has indicated that he or she has met the journal's requirements for authorship.