1. Department of Urology, UCSF, San Francisco, California, USA
2. Gladstone Institute of Virology and Immunology, UCSF, San Francisco, California, USA
3. Department of Obstetrics, Gynecology and Reproductive Sciences, UCSF, San Francisco, California, USA
4. Department of Gynecology and Obstetrics, National Hospital Organization Osaka National Hospital, Osaka, Japan
5. Department of Medicine, Microbiology and Immunology, UCSF, San Francisco, California, USA