[1] Tech Univ Dresden, Univ Klinikum Carl Gustav Carus, Klin & Poliklin Dermatol, Dresden, Germany
[2] Univ Klinikum Hamburg Eppendorf, Inst Med Microbiol Virol & Hyg, Hamburg, Germany
[3] Ruhr Univ Bochum, Klin Dermatol Venerol & Allergol, Bochum, Germany