[1] Univ Klinikum Essen, Essen, Germany
[2] Eberhard Karls Univ Tubingen, Tubingen, Germany
[3] Elbe Kliniken Buxtehude, Buxtehude, Germany
[4] Univ Klinikum Schleswig Holstein, Kiel, Germany
[5] Univ Klinikum Hamburg Eppendorf, Hamburg, Germany
[6] Justus Liebig Univ Giessen, Giessen, Germany
[7] Univ Klinikum Regensburg, Regensburg, Germany
[8] Helios Klinikum Erfurt, Erfurt, Germany
[9] Helios St Elisabeth Klin Oberhausen, Oberhausen, Germany
[10] Tech Univ Dresden, Univ Klinikum Carl Gustav Carus, Hauttumorzentrum NCT UCC, Dresden & Klin Dermatol, Dresden, Germany
[11] Univ Klinikum Saarlandes, Homburg, Germany
[12] Klinikum Bremerhaven, Bremerhaven, Germany
[13] Bristol Myers Squibb, Med Abt, Munich, Germany
[14] Univ Klinikum Schleswig Holstein, Lubeck, Germany
[15] Harzklinikum Dorothea Christiane Erxleben GmbH, Quedlinburg, Germany
[16] Univ Klinikum Mannheim, RuprechtKarl Univ Heidelberg, Mannheim, Germany
[17] Hannover Med Sch, Haut Tumor Zentrum, Hannover, Germany
[18] Univ Klinikum Ruhr Univ, Muhlenkreiskliniken AoR, Minden, Germany