[1] Christian Albrechts Univ Kiel, Dermatol Dept, Kiel, Germany
[2] Copenhagen Univ Hosp Herlev, Dept Oncol, Herlev, Denmark
[3] Copenhagen Univ Hosp Herlev, Dept Hematol, Herlev, Denmark
[4] Mil Med Acad VMA, Dermatol & Venerol Dept, Belgrade, Serbia
[5] Univ Spital Zurich, Dermatol, Klin Dermatol, Zurich, Switzerland
[6] Maria Sklodowska Curie Natl Res Inst Oncol, Dept Soft Tissue Bone Sarcoma & Melanoma MSCMI, Warsaw, Poland
[7] Dermatol Ctr Buxtehude, Dermato Oncol Dept, Buxtehude, Germany
[8] Hosp Univ La Paz, Oncol Dept, Madrid, Spain
[9] Univ Athens, Laiko Gen Hosp Athens, Oncol Sect, Dept Internal Med 1, Athens, Greece
[10] EUMelaReg, Berlin, Germany
[11] Herlev & Gentofte Hosp, Oncol Dept, Herlev, Denmark
[12] Bulgarian Natl Canc Registry, Oncodermatol, Sofia, Bulgaria
[13] KBC Univ Hosp Ctr Zagreb, Dept Oncol, Zagreb, Croatia
[14] Vall dHebron Univ Hosp, Med Oncol Dept, Barcelona, Spain
[15] Aarhus Univ Hosp, Clin Med, Aarhus, Denmark
[16] Maria Sklodowska Curie Natl Res Inst Oncol, Dept Soft Tissue Bone Sarcoma & Melanoma, Warsaw, Poland
[17] IRCCS Fdn Pascale, Melanoma Canc Immunotherapy & Dev Therapeut, Ist Nazl Tumori, Naples, Italy
[18] Univ Spital Zurich, Dermatol Dept, Klin Dermatol, Zurich, Switzerland
[19] Univ Hosp Essen, Dept Dermatol, Hautklin, Westdeutsches Tumorzentrum, Essen, Germany
[20] OUH Odense Univ Hosp, Dept Oncol, Odense, Denmark