[1] Univ Hosp Montpellier, Allergy Unit, Montpellier, France
[2] Schweizerischers Inst Allergie & Asthmaforsch, Davos, Switzerland
[3] Azienda Osped Univ A Meyer, SODc Allergol, Florence, Italy
[4] Univ Verona, Clin Pediat, Verona, Italy
[5] Univ Hosp Lille, Pediat Dept, Pneumoallergy Unit, Lille, France
[6] Hop Armand Trousseau, AP HP, Allergy Unit, Paris, France
[7] Charite, Dept Pediat Pneumol & Immunol, Mol Allergy & Immunomodulat, Berlin, Germany
[8] Osped Santa Barbara, Unita Pediat, Iglesias, Italy
[9] Univ Autonoma Madrid, Univ Hosp Nino Jesus, Allergy Unit, Madrid, Spain
[10] Kings Coll London, Guys & St Thomas Hosp NHS Fdn Trust, Paediat Allergy, London, England
[11] UOC Pediat Osped San Giovanni di Dio, Crotone, Italy