[1] Pavillon Med chirurg Pediat, Serv Pediat, Blvd Lacordaire, F-59056 Roubaix, France
[2] CHRU Lille, Unite Pneumol & Allergol Pediat, Hop Jeanne de Flandre, 2 Ave Oscar Lambret, F-59037 Lille, France
[3] Univ Hosp Montpellier, Dept Allergy, 191 Ave Doyen Gaston Giraud, F-34295 Montpellier, France
[4] Univ Montpellier, Inst Desbrest Epidemiol & Sante Publ, IURC, Campus Sante,641 Ave Doyen Gaston Giraud, F-34090 Montpellier, France
[5] Univ Hosp Montpellier, WHO Collaborating Ctr Sci Classificat Support, Montpellier, France
[6] CHR Metz Thionville, Inst Reg Pathol Allergol Environm & Immunol, Thionville, France