1. Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois2Division of General Internal Medicine and Geriatrics, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
2. Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
3. Optimal Data Analysis LLC, Evanston, Illinois
4. Division of General Internal Medicine and Geriatrics, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois4Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
5. Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
6. Department of Dermatology, University of Catania, Catania, Italy