Full text: Available Index: LILACS (Americas) Main subject: Periodicals as Topic / Bibliometrics / Biomedical Technology / Biomedical Research / Diffusion of Innovation Type of study: Systematic review of observational studies Limits: Humans Country/Region as subject: South America / Brazil Language: English Journal: Braz. j. otorhinolaryngol. (Impr.) Journal subject: Otolaryngology Year: 2015 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de São Paulo/BR