[1] Charite, Allergie Ctr Charite, Dept Dermatol & Allergy, D-10117 Berlin, Germany
[2] Norfolk & Norwich Univ Hosp, St Thomas Hosp, London & Dermatol Dept, St Johns Inst Dermatol, Norwich, Norfolk, England
[3] Univ Autonoma Barcelona, Hosp del Mar, IMAS, Dept Dermatol, Barcelona, Spain
[4] Royal London Hosp, London E1 1BB, England
[5] St Thomas Hosp, St Johns Inst Dermatol, London, England
[6] Hop Tenon, Serv Dermatol & Allergol, F-75970 Paris, France
[7] Med Univ Lodz, Psychodermatol Dept, Lodz, Poland