[1] Elbe Klinikum Buxtehude, Buxtehude, Germany
[2] Univ Klinikum Schleswig Holstein, Kiel Schleswig Holstein, Germany
[3] Charite, Melanomactr, D-13353 Berlin, Germany
[4] Heidelberg Univ, Hautklin, Heidelberg, Germany
[5] Univ Dept Dermatol, Homburg, Germany
[6] Univ Dept Dermatol, Mainz, Germany
[7] Hellen Cooperat Oncol Grp, Athens, Greece
[8] Univ Dept Dermatol, Hamburg, Germany
[9] Landesklin Dermatol, Salzburg, Austria
[10] Univ Hosp Essen, Essen, Germany
[11] Univ Zurich Hosp, Dept Dermatol, CH-8091 Zurich, Switzerland
[12] Hannover Med Sch, Skin Canc Ctr, Dept Dermatol & Allergy, Hannover, Germany
[13] Univ Dept Dermatol, Bochum, Germany
[14] Dept Dermatol, Oldenburg, Germany
[15] Univ Dept Dermatol, Munster, Germany
[16] Univ Cologne, D-50931 Cologne, Germany
[17] Dept Dermatol, Dresden, Germany
[18] Univ Dept Dermatol, Ulm, Germany
[19] Dept Dermatol, Darmstadt, Germany
[20] Univ Dept Dermatol, Kiel, Germany