1. Ariadne Labs Boston Massachusetts USA
2. Harvard T.H. Chan School of Public Health Boston Massachusetts USA
3. Hillcrest Medical Center Peggy V. Helmerich Women's Health Center Tulsa Oklahoma USA
4. Department of Obstetrics and Gynecology Oklahoma State University Medical Center Tulsa Oklahoma USA
5. Department of Obstetrics and Gynecology Chan Medical School, University of Massachusetts Worcester Massachusetts USA
6. Department of Obstetrics and Gynecology UMass Memorial Health—UMass Memorial Medical Center Worcester Massachusetts USA
7. Department of Obstetrics and Gynecology UMass Memorial Health—HealthAlliance‐Clinton Hospital Clinton Massachusetts USA
8. Birth Place Lab University of British Columbia Vancouver British Columbia Canada