1. Department of Pediatric Respiratory Medicine; Royal Brompton Hospital; Sydney St. London SW3 6NP United Kingdom
2. Multidisciplinary Sleep Unit, Pulmonology, University Hospital of Burgos and CIBER of Respiratory Diseases (CIBERES); Burgos Foundation for Health Research; Burgos Spain
3. Pediatric Pulmonology Unit, First Department of Pediatrics; National and Kapodistrian University of Athens School of Medicine and Aghia Sophia Children's Hospital; Athens Greece
4. Department of Ophthalmology, Otolaryngology and Head and Neck Surgery, Botucatu Medical School; São Paulo State University-UNESP; Botucatu, São Paulo Brazil