Bodelon Clara, Bernabe-Ortiz Antonio, Schiff Melissa A, Reed Susan D
Department of Epidemiology, University of Washington, Seattle, WashingtonSchools of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, PeruHarborview Injury Prevention and Research Center, Seattle, WashingtonDepartment Obstetrics and Gynecology, Division of Public Health Sciences, University of Washington, Seattle, Washington (Bodelon, Bernabe-Ortiz, Schiff, Reed).
Obstet Gynecol. 2009 Oct;114(4):927. doi: 10.1097/AOG.0b013e3181ba039c.