1. Department of Dermatology; University of Pennsylvania; Perelman School of Medicine; Philadelphia PA U.S.A.
2. Institute of Preventive Medicine, Environmental and Occupational Health; Maroussi Greece
3. Cleveland Clinic; Lerner College of Medicine at Case Western Reserve University; Cleveland OH U.S.A.
4. Faculty of Medicine; National and Kapodistrian University of Athens; Athens Greece
5. Department of Dermatology; Vanderbilt University Medical Center; Nashville TN U.S.A.
6. Department of Dermatology; University of California San Francisco; San Francisco CA U.S.A.
7. University of California Davis; Davis CA U.S.A.
8. University of California Berkeley; Berkeley CA U.S.A.
9. School of Nursing; University of California San Francisco; San Francisco CA U.S.A.
10. Stanford University; Stanford CA U.S.A.