[1] Hannover Med Sch, Dept Dermatol & Allergy, Skin Canc Ctr, Hannover, Germany
[2] Eberhard Karls Univ Tubingen, Dept Dermat, Ctr Dermatooncol, Tubingen, Germany
[3] Elbe Klinikum Buxtehude, Dept Dermatol, Buxtehude, Germany
[4] Univ Hosp Kiel, Dept Dermatol Venerol & Allergol, Kiel, Germany
[5] Klinikum Dortmund, Dept Dermatol, Dortmund, Germany
[6] Univ Hosp Hamburg Eppendorf, Dept Dermatol & Venerol, Hamburg, Germany
[7] Justus Liebig Univ Giessen, Univ Hosp, Dept Dermatol & Allergol, Giessen, Germany
[8] Univ Hosp Regensburg, Dept Dermatol, Regensburg, Germany
[9] Tech Univ Dresden, Fac Med, Dept Dermatol, Skin Canc Ctr, Dresden, Germany
[10] Tech Univ Dresden, Univ Hosp Carl Gustav Carus, Dresden, Germany
[11] Saarland Univ Med Ctr, Dept Dermatol, Homburg, Germany
[12] Bristol Myers Squibb, Med Dept, Munich, Germany
[13] Univ Hosp Ulm, Dept Dermatol & Allergol, Ulm, Germany
[14] Univ Hosp Schleswig Holstein, Dept Dermatol Venerol & Allergol, Lubeck, Germany
[15] Univ Hosp Essen, Dept Dermatol, Essen, Germany
[16] Harzklinikum Dorothea Christiane Erxleben, Dept Dermatol & Allergol, Quedlinburg, Germany
[17] Univ Med Ctr Mannheim, Dept Dermatol Venerol & Allergol, Mannheim, Germany
[18] Univ Hosp Muenster, Dept Dermatol, Munster, Germany