[1] Wroclaw Med Univ, Dept Dermatol Venereol & Allergol, Wroclaw, Poland
[2] Univ Cologne, Dept Dermatol, Fac Med, Cologne, Germany
[3] Johannes Gutenberg Univ Mainz, Univ Med Ctr, Dept Dermatol, Mainz, Germany
[4] Dermatol Outpatient Off Dr Uwe Kirschner, Mainz, Germany
[5] Brandenburg Med Sch Theodor Fontane, Dessau Med Ctr, Dept Dermatol, Dessau, Germany
[6] Brandenburg Med Sch Theodor Fontane, Dessau Med Ctr, Dept Venereol, Dessau, Germany
[7] Brandenburg Med Sch Theodor Fontane, Dessau Med Ctr, Dept Allergol & Immunol, Dessau, Germany
[8] Fac Hlth Sci Brandenburg, Dessau, Germany