1. Department of Dermatology Stanford University Medical Center and Cancer Institute Stanford CA U.S.A.
2. Department of Dermatology UCHealth University of Colorado Hospital Aurora CO U.S.A.
3. Harvard T.H. Chan School of Public Health Boston MA U.S.A.
4. Department of Dermatology University of Michigan Health System and Comprehensive Cancer Center Ann Arbor MI U.S.A.
5. Dermatology Service Veterans Affairs Palo Alto Healthcare System Palo Alto CA U.S.A.