1. Department of Obstetrics and Gynecology University of California, Los Angeles, California, USA
2. The Howard Hughes Medical Institute University of California, Los Angeles, California, USA
3. Department of Molecular and Medical Pharmacology University of California, Los Angeles, California, USA
4. Department of Urology, David Geffen School of Medicine University of California, Los Angeles, California, USA
5. Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research University of California, Los Angeles, California, USA
6. Department of Microbiology, Immunology and Molecular Genetics, Los Angeles, California, USA
7. Department of Molecular, Cell and Developmental BiologyLos Angeles, California, USA, University of California, Los Angeles, California, USA
8. The VA Greater Los Angeles Health Care System, Los Angeles, California, USA