1. School of Medicine, Stanford University, Stanford, California
2. Department of Obstetrics and Gynecology, Northwestern University, Chicago, Illinois
3. School of Medicine, University of Colorado, Aurora, Colorado
4. Feinberg School of Medicine, Northwestern University, Chicago, Illinois
5. School of Medicine, UCSF, San Francisco, California
6. Department of Medicine, School of Medicine, Stanford University, Stanford CA, USA
7. Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
8. Department of Urology, Stanford University, Stanford, California