title: Obstetric hemorrhage. Introduction.
authors.affiliation: Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Columbia University, College of Physicians and Surgeons, 622 West 168th Street, PH-16, New York, NY 10032, USA. pcd25@columbia.edu
authors.forename: Patricia C
authors.initials: PC
authors.lastname: Devine
authors.forename: Jason D
authors.initials: JD
authors.lastname: Wright