[1] Div Immunol Allergy & Infect Disea, Dept Dermatol, Vienna, Austria
[2] Med Univ, Div Gen Dermatol, Dept Dermatol, Vienna, Austria
[3] Univ Vienna, Dept Med 1, Clin Dept Hematol & Hemostaseol, Vienna, Austria
[4] Med Univ Vienna, Dept Pathol, Vienna, Austria