1. Postgraduate Program in Child and Adolescent Health, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
2. Otorhinolaryngology Service, Pediatric Otorhinolaryngology Unit, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil
3. Plastic Surgery Service, HCPA, Porto Alegre, Brazil
4. Department of Speech Therapy, UFRGS, Porto Alegre, Brazil
5. Pediatric Pulmonology Unit, Pediatrics Service, HCPA, Porto Alegre, Brazil