1. San Francisco Department of Dermatology University of California San Francisco USA
2. Department of Dermatology University of Utah Salt Lake City USA
3. Department of Dermatology Vanderbilt University Medical Center Nashville USA
4. Department of Dermatology Oregon Health & Science University Portland USA
5. Division of Dermatology Rabin Medical Center Petah Tikva Israel
6. School of Medicine Tel Aviv University Tel Aviv Israel
7. Division of Epidemiology and Biostatistics University of California Berkeley USA