[1] Charite, Dept Dermatol & Allergy, Clin Res Ctr Hair & Skin Sci, D-10117 Berlin, Germany
[2] Univ Bolognia, Dept Dermatol, Bologna, Italy
[3] Univ Miami, Miller Sch Med, Dept Dermatol & Cutaneous Surg, Coral Gables, FL 33124 USA
[4] Univ Sheffield, Dept Dermatol, Sheffield S10 2TN, S Yorkshire, England
[5] Hop St Louis, Ctr Sabouraud, Paris, France
[6] Univ Libre Brussels, Hop Erasme, Private Practice & Dermatol Dept, Brussels, Belgium
[7] Univ Amsterdam, Acad Med Ctr, Dept Dermatol, NL-1105 AZ Amsterdam, Netherlands
[8] Aristotle Univ Thessaloniki, Papageorgiou Hosp, Dept Dermatol & Venerol, GR-54006 Thessaloniki, Greece
[9] Univ Erlangen Nurnberg, Dept Dermatol Venerol & Allergol, Erlangen, Germany
[10] Univ Hosp Zurich, Dept Dermatol, Wallisellen, Switzerland
[11] Charite, Dept Dermatol & Allergy, Div Evidence Based Med, D-10117 Berlin, Germany