aDepartment of Allergy, CUF, Lisbon, Portugal

bInstitut Desbrest d’Epidémiologie et de Santé Publique, IDESP, University of Montpellier – INSERM

cDepartment of Allergy, University Hospital of Montpellier

dWHO Collaborating Centre on Scientific Classification Support, Montpellier, France

Correspondence to Luciana K. Tanno, MD, PhD, Division of Allergy, Department of Pulmonology, Hôpital Arnaud de Villeneuve, University Hospital of Montpellier, 371, av. du Doyen Gaston Giraud, 34295 Montpellier cedex 5, France. Tel: +33 467336107; fax: +33 467633645; e-mail: [email protected]