1. Department of Pediatrics, Medical Sciences School, Campos Sales Pediatric Pulmonology Outpatient Clinic, Belo Horizonte Municipal Health Authority and Lucas Machado Foundation
2. Pediatric Pulmonology Unit, University Hospital
3. Department of Statistics, Exact Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
4. Service des Maladies Respiratoires, Hôpital Arnaud de Villeneuve, Montpellier, France