1. Department of Health and Human Communication, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
2. Department of Otolaryngology - Head and Neck Surgery, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
3. Post-Graduate Program in Child and Adolescent Health, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
4. Department of Ophthalmology and Otorhinolaryngology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil