[1] Tech Univ Munich, Dept Dermatol & Allergy Biederstein, Munich, Germany
[2] ZAUM Ctr Allergy & Environm, Munich, Germany
[3] Ludwig Maximilians Univ Munchen, Dept Dermatol & Allergy, Munich, Germany
[4] Univ Bern, Bern Univ Hosp, Dept Dermatol, Inselspital, Bern, Switzerland
[5] Hop St Andre, Serv Dermatol, Bordeaux, France
[6] Hautklin Linden, Dept Dermatol MHH, Hannover, Germany
[7] ERASMUS MC, Pediat Dermatol Unit, Dept Pediat, Rotterdam, Netherlands
[8] Univ Milan, Osped Maggiore Policlin, Dept Pathophysiol & Transplantat, Milan, Italy
[9] Univ Hosp UMAS, Dept Dermatol, Malmo, Sweden
[10] Aarhus Univ Hosp, Dept Dermatol, Aarhus, Denmark
[11] Hop Cantonal Univ, Clin Dermatol, Geneva, Switzerland
[12] Univ Modena & Reggio Emilia, Dept Dermatol, Modena, Italy