1. Laboratoire de Génétique d'Immunologie et de Pathologies Humaines; Faculté des Sciences de Tunis; Université Tunis El Manar; Tunis Tunisia
2. Division of Human Genetics; Department of Genetics; Washington University School of Medicine; St Louis MO 63110 U.S.A
3. Unité de Recherche de Physiologie des Agressions: Etudes Métaboliques et Endocriniennes; Faculté des Sciences de Tunis; Université Tunis El Manar; Tunis Tunisia
4. Department of Dermatology; La Rabta Hospital of Tunis; Tunis Tunisia
5. National Heart and Lung Institute; Imperial College London; London SW3 6LY U.K
6. Department of Dermatology; Military Hospital of Tunis; Tunis Tunisia
7. Department of Dermatology and the Immunology Institute; Icahn School of Medicine at the Mount Sinai Medical Center; NY U.S.A
8. Division of Dermatology; Baylor University Medical Center; Junius St, Suite 145 Dallas 3900 TX 75246 U.S.A