1. Department of Obstetrics and Gynecology, Madigan Army Medical Center, Tacoma, WA 98431, USA
2. Department of Informatics, Madigan Army Medical Center, Tacoma, WA 98431, USA
3. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Madigan Army Medical Center, Tacoma, WA 98431, USA