Departments of Obstetrics and Gynecology, University of California, Davis, School of Medicine, Sacramento, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, University of California Irvine, School of Medicine, Irvine, the Department of Reproductive Medicine, University of California, San Diego, School of Medicine, San Diego, and the Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, School of Medicine, San Francisco, California.
Corresponding author: L. Elaine Waetjen, MD, University of California, Davis, Department of Obstetrics and Gynecology, 4860 Y Street, Suite 2500, Sacramento, CA 95817; e-mail: [email protected].
The ULTRA Clinical Trial and ULTRA Registry are funded by Halt Medical.
Financial Disclosure The authors did not report any potential conflicts of interest.