Institution: | From the ‡Urology Department and RH Lurie Comprehensive Cancer Center and ;the §Physiology Department, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611 and ;the ¶Committee on Molecular Metabolism and Nutrition and ;the ‖Department of Medicine, Section of Endocrinology, Diabetes, and Metabolism, University of Chicago, Chicago, Illinois 60637 |