1. Sera Prognostics, Inc, Salt Lake City, UT, USA
2. Department of Obstetrics and Gynecology, Boston University School of Medicine, Boston, MA, USA
3. Department of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, TX, USA
4. Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Diego, CA, USA
5. Department of Obstetrics and Gynecology, Denver Health and Hospital Authority, Denver, CO, and Department of Obstetrics and Gynecology, University of Colorado Denver, Aurora, CO, USA
6. Department of Obstetrics and Gynecology, Valleywise Health, and Department of Obstetrics and Gynecology, University of Arizona College of Medicine, Phoenix, AZ, USA
7. Department of Obstetrics and Gynecology, University of Massachusetts-Baystate, Springfield, MA, USA
8. Department of Obstetrics and Gynecology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
9. Department of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis, IN, USA
10. Department of Obstetrics and Gynecology, Ochsner Health, New Orleans, LA, USA
11. Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, SC, USA
12. Department of Obstetrics and Gynecology, Duke University School of Medicine, Durham, NC, USA
13. Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, OR, USA
14. Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
15. Regional Obstetrical Consultants, Chattanooga, TN, USA
16. Department of Obstetrics and Gynecology, University of South Carolina School of Medicine Greenville and Prisma Health-Upstate, Greenville, SC, USA
17. Department of Pediatrics, Harvard Medical School, and Department of Neonatology, Beth Israel Deaconess Medical Center, Boston, MA, USA