1. Muskie School of Public Service, University of Southern Maine, Portland, ME, USA
2. Pregnancy and Child Health Research Center, HealthPartners Institute, Minneapolis, MN, USA
3. Department of Obstetrics and Gynecology, Weill Cornell Medicine, New York, NY, USA
4. Department of Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
5. Division of Maternal Fetal Medicine, Department of Obstetrics and Gynaecology, The University of British Columbia, Vancouver, BC, Canada