[1] Univ Klinikum Giessen & Marburg, Klin Dermatol & Allergol, Marburg, Germany
[2] Kempf & Pfaltz Histol Diagnost, Zurich, Switzerland
[3] Univ Klinikum Marburg, Inst Pathol, UKGM, Marburg, Germany
[4] Univ Klinikum Frankfurt, Klin Dermatol Venerol & Allergol, Frankfurt, Germany