1   Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, Massachusetts

,

Kaitlyn James

1   Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, Massachusetts

,

Bryann Bromley

1   Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, Massachusetts

,

Nathanael C. Koelper

2   Department of Obstetrics and Gynecology, Women's Health Clinical Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania

,

Stephen T. Chasen

3   Division of Maternal-Fetal Medicine, Weill Cornell Medical College, New York, New York

,

Laurie Griffin

4   Department of Obstetrics and Gynecology, The Warren Alpert Medical School at Brown University, Providence, Rhode Island

,

Ashley S. Roman

5   Department of Obstetrics and Gynecology, NYU Grossman School of Medicine, New York, New York

,

5   Department of Obstetrics and Gynecology, NYU Grossman School of Medicine, New York, New York

,

Angela Ranzini

6   Division of Maternal-Fetal Medicine, MetroHealth, Cleveland, Ohio

,

Caitlin Clifford

7   Division of Maternal-Fetal Medicine, University of Michigan Health, Ann Arbor, Michigan

,

Joseph R. Biggio

8   Division of Maternal-Fetal Medicine, Ochsner Health, New Orleans, Louisiana

,

Akila Subramaniam

9   Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, Alabama

,

Angela R. Seasely

9   Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, Alabama

,

Jessica M. Page

10   Division of Maternal-Fetal Medicine, Intermountain Health, Salt Lake City, Utah

,

Sara S. Nicholas

11   Axia Women's Health Main Line Perinatal Associates, Wynnewood, Pennsylvania

,

Jay Idler

12   Division of Maternal-Fetal Medicine, Allegheny Health Network, Pittsburgh, Pennsylvania

,

Rashmi Rao

13   Department of Obstetrics and Gynecology, UCLA, Los Angeles, California

,

Raj Shree

14   Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington

,

Graham McLennan

15   Clinical Affairs, Sequenom Inc, LabCorp, San Diego, California

,

Lorraine Dugoff

16   Division of Reproductive Genetics, Department of Obstetrics and Gynecology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania

17   Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania

,

This work was supported by Labcorp.

Clinical Trials The study was registered with ClinicalTrials.gov (identifier: NCT04488393).