[1] Charite Univ Med Berlin, Allergie Ctr Charite, Dept Dermatol & Allergy, Berlin, Germany
[2] Odense Univ Hosp, Dept Dermatol, Odense, Denmark
[3] Odense Univ Hosp, Allergy Ctr, Odense, Denmark
[4] Univ Autonoma Barcelona, Hosp del Mar IMAS, Dept Dermatol, E-08193 Barcelona, Spain
[5] Dr DY Patil Med Coll & Hosp, Dept Dermatol, Nerul, Navi Mumbai, India
[6] Guys & St Thomas NHS Fdn Trust, St Johns Inst Dermatol, London, England
[7] Hiroshima Univ, Dept Dermatol, Hiroshima 730, Japan
[8] Med Univ S Carolina, Dept Med, Charleston, SC 29425 USA
[9] Univ Athens, Sch Med, Allergy Unit D Kalogeromitros, Dept Dermatol & Venereol 2,Attikon Univ Hosp, GR-11527 Athens, Greece
[10] Univ Manitoba, Dept Pediat & Child Hlth, Winnipeg, MB R3T 2N2, Canada
[11] Peking Univ, Hosp 1, Dept Dermatol & Venereol, Beijing 100871, Peoples R China