[1] Charite Univ Med Berlin, Allergy Ctr Charite, Dept Dermatol & Allergy, D-10117 Berlin, Germany
[2] Odense Univ Hosp, Dept Dermatol, Allergy Ctr, DK-5000 Odense, Denmark
[3] Univ Genoa, DIMI, Genoa, Italy
[4] Norfolk & Norwich Univ Hosp, Dermatol Ctr, Norwich, Norfolk, England
[5] Singapore Gen Hosp, Dept Dermatol, Singapore 0316, Singapore
[6] Hannover Med Sch, Dept Dermatol & Allergol, Hannover, Germany
[7] Univ Amsterdam, Acad Med Ctr, Dept Dermatol, NL-1105 AZ Amsterdam, Netherlands
[8] Univ Hosp RWTH Aachen, Dept Dermatol, Aachen, Germany
[9] Univ Hosp Schleswig Holstein, Inst Social Med, Lubeck, Germany
[10] Univ Hosp Bern, Dept Dermatol, CH-3010 Bern, Switzerland
[11] Univ Bari, Dept MIDIM, Unit Dermatol, Bari, Italy