[1] Dessau Med Ctr, Dept Dermatol, Dessau, Germany
[2] Dessau Med Ctr, Dept Venereol Allergol & Immunol, Dessau, Germany
[3] Martin Luther Univ Halle Wittenberg, Med Fac, Inst Med Epidemiol Biometry & Informat, Martin, TN, Germany
[4] Charite, Inst Clin Pharmacol & Toxicol, Lab Biogerontol Dermato Pharmacol & Dermato Endoc, Berlin, Germany