Affiliation: | 1. Department of Obstetrics, Gynecology and Reproductive Sciences, School of Medicine, University of California, San Francisco, California, USA;2. Express Scripts, Inc., and Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, USA;3. Department of Obstetrics, Gynecology and Reproductive Sciences, School of Medicine, University of California, San Francisco, California, USA Medical Effectiveness Research Center for Diverse Populations, University of California, San Francisco, California, USA;4. Kaiser Permanente Medical Group, San Francisco, California, USA;5. Department of Obstetrics, Gynecology and Reproductive Sciences, School of Medicine, University of California, San Francisco, California, USA Medical Effectiveness Research Center for Diverse Populations, University of California, San Francisco, California, USA Department of Epidemiology and Biostatistics, School of Medicine, University of California, San Francisco, California, USA |