1 Veterans Affairs Center for Clinical Management Research, Veterans Affairs Ann Arbor Healthcare System, University of Michigan, Ann Arbor, Michigan.
2 Veterans Affairs Center for Clinical Management Research, Veterans Affairs Ann Arbor Healthcare System, University of Michigan, Ann Arbor, Michigan; Division of Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan.
3 Department of Urology, University of Michigan, Ann Arbor, Michigan.