1. Division of Geriatrics University of California San Francisco CA U.S.A.
2. Department of Medicine III University Hospital Ludwig Maximilian University of Munich Munich Germany
3. Department of Dermatology Stanford University School of Medicine Stanford CA U.S.A.
4. Department of Dermatology University of Pennsylvania Philadelphia PA U.S.A.
5. Department of Dermatology Vanderbilt University Medical Center Nashville TN U.S.A.
6. Program for Clinical Research Department of Dermatology University of California San Francisco CA U.S.A.
7. Veterans Affairs Medical Center San Francisco CA U.S.A.