1. Master's Degree in Health of Children and Adolescents, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
2. Department of Ophthalmology and Otorhinolaryngology, Universidade Federal do Rio Grade do Sul, Porto Alegre, RS, Brazil
3. Department of Surgery, Universidade Federal do Rio Grade do Sul, Porto Alegre, Rio Grande do Sul, Brazil
4. Department of Health and Human Communication, Universidade Federal do Rio Grade do Sul, Porto Alegre, Rio Grande do Sul, Brazil