| Institution: | 1. Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Boston, Massachusetts, USA;2. Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, Oregon, USA
Department of Maternal Fetal Medicine, Allina Health, Minneapolis, Minnesota, USA;3. Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, Oregon, USA;4. Department of Obstetrics, Gynecology, & Reproductive Sciences, University of California San Francisco, San Francisco, California, USA |
