[1] Lausanne Univ Hosp Ctr, Hop Beaumont, Dept Dermatol & Venerol, CH-1011 Lausanne, Switzerland
[2] Addenbrookes Hosp, Dept Dermatol, Cambridge CB2 0QQ, England
[3] Hop Edouard Herriot, Dept Dermatol, Lyon, France
[4] Ctr Hosp Lisboa Cent, Hosp Santo Antonio Capuchos, Dept Dermatol, P-1169050 Lisbon, Portugal
[5] Univ Hosp Wuerzburg, Dept Dermatol Venerol & Allergol, D-97080 Wurzburg, Germany
[6] Gen Univ Hosp Gregorio Maranon, Dept Dermatol, Madrid 28007, Spain
[7] Clin Dermatol Int, Dept Dermatol, Madrid, Spain
[8] Clin Ruber, Madrid, Spain