[1] Studienserv Zentrum, Hautklin, Sekt Dermatol Onkol, Tubingen, Germany
[2] Haut Tumor Zentrum Hannover, Klin Dermatol Allergol & Venerol, Hannover, Germany
[3] Elbe Klinikum Buxtehude, Buxtehude, Germany
[4] Srh Wald Klinikum Gera, Dept Dermatol, Gera, Germany
[5] Saarland Univ Hosp, Klin Dermatol Venerol & Allergol, Homburg, Germany
[6] Univ Lubeck, Dermatol Klin, Lubeck, Germany
[7] Harzklinikum Dorothea Christiane Erxleben, Dept Dermatol, Quedlinburg, Germany
[8] Univ Klinikum Mannheim, Mannheim, Germany
[9] Univ Duisburg Essen, Dept Dermatol, Essen, Germany
[10] Univ Klinikum Essen, Dermatol Klin, Essen, Germany