1. Department of Gynecologic Surgery and Obstetrics, Walter Reed National Military Medical Center , Bethesda, MD 20814, USA
2. Eunice Kennedy Shriver National Institute of Child Health and Human Development , Bethesda, MD 20892, USA
3. Eastern Virginia Medical School , Norfolk, VA 23507, USA
4. Department of Research Programs, Walter Reed National Military Medical Center , Bethesda, MD 20814, USA
5. RAF Lakenheath , Lakenheath, UK
6. U.S. Naval Hospital Okinawa , Okinawa, Japan
7. Department of Gynecologic Surgery and Obstetrics, Uniformed Services University , Bethesda, MD 20814, USA