1. Department of Obstetrics and Gynecology, Southern California Kaiser Permanente, Kern County, 1200 Discovery Drive, Bakersfield, CA 93309, USA
2. Division of Minimally Invasive Gynecologic Surgery, Department of Obstetrics and Gynecology, Baylor College of Medicine, 6651 Main Street, 10th Floor, Houston, TX 77030, USA
3. University of Alabama, Department of Family Medicine, 801 Campus Drive, Tuscaloosa, AL 35487, USA
4. University of Birmingham, School of Medicine, 1720 2nd Avenue, Birmingham, AL 35294, USA
5. Division of Reproductive Medicine, Jinan Central Hospital Group, 105 Jiefang Road, Jinan City, Shandong Province 250013, China
6. Department of Pathology & Immunology, Baylor College of Medicine, 6651 Main Street, 4th Floor, Houston, TX 77030, USA
7. Maternal and Fetal Medicine, Department of Obstetrics and Gynecology, Lincoln Medical and Mental Health Center, 234 East 149th Street, Bronx, NY 10451, USA