1. Division of Dermatology; Department of Medicine; Loyola University Medical Center; Maywood IL U.S.A.
2. Medical School; University of Illinois; Chicago IL U.S.A.
3. Apex Dermatology; Littleton CO U.S.A.
4. Department of Dermatology; Harvard Medical School and Beth Israel Deaconess Medical Center; Boston MA U.S.A.
5. Division of Dermatology; Department of Medicine; J.H. Stroger Hospital of Cook County; Chicago IL U.S.A.
6. Department of Dermatology; Rush Medical College; Chicago IL U.S.A.