1. CH Roubaix, Department of Pediatrics Children's Hospital Roubaix France
2. CHU Lille, Pediatric Pulmonology and Allergy Department Pôle enfant, Hôpital Jeanne de Flandre Lille France
3. Univ Lille, ULR 2694: METRICS Lille France
4. Department of Medical Care for School Children National Education Services of the Nord‐Pas de Calais region of France Lille France
5. Univ. Lille, CNRS, Inserm, CHU Lille Institut Pasteur de Lille, U1019 – UMR 9017 – CIIL – Center for Infection and Immunity of Lille Lille France