1 Department of Obstetrics, Gynecology & Reproductive Sciences, Bixby Center for Global Reproductive Health, University of California, San Francisco, San Francisco, CA.
2 Department of Obstetrics, Gynecology & Reproductive Sciences, Bixby Center for Global Reproductive Health, University of California, San Francisco, San Francisco, CA. Electronic address: [email protected].
3 Department of Obstetrics and Gynecology, University of Tennessee Medical Center, Knoxville, TN.
4 Department of Obstetrics and Gynecology, University of Texas Health Sciences Center San Antonio, San Antonio, TX.
5 Department of Obstetrics and Gynecology, Penn State University Hershey Medical Center, Hershey, PA.