1. David Geffen School of Medicine University of California Los Angeles Los Angeles California USA
2. Department of Internal Medicine Kaiser Permanente Los Angeles Medical Center Los Angeles California USA
3. College of Medicine University of Arizona Tucson Arizona USA
4. Division of Dermatology University of California Los Angeles Los Angeles California USA
5. Department of Dermatology University of Southern California Los Angeles California USA
6. Division of Plastic and Reconstructive Surgery University of Southern California Los Angeles California USA
7. Department of Dermatology University of Arkansas for Medical Sciences Little Rock Arkansas USA