[1] Charite, Inst Pathol, Charite, D-10117 Berlin, Germany
[2] Univ Heidelberg, Haut Klin, D-6900 Heidelberg, Germany
[3] Univ Tubingen, Sekt Dermatol Onkol, Haut Klin, D-72074 Tubingen, Germany
[4] Johannes Wesling Klinikum, Inst Pathol, Minden, Germany
[5] LMU, Inst Pathol, Munich, Germany
[6] Hannover Med Sch, Inst Pathol, Hannover, Germany
[7] Univ Klinikum Koln, Inst Pathol, Cologne, Germany
[8] Inst Pathol Nordhessen, Kassel, Germany
[9] Pathol & Gewerbepathol Inst, Gelsenkirchen, Germany
[10] Univ Heidelberg, Inst Pathol, D-6900 Heidelberg, Germany
[11] Johannes Wesling Klinikum, Haut Klin, Minden, Germany