1. Educational Technology Section, Bauru School of Dentistry, University of Sao Paulo, Bauru 17012-901, SP, Brazil
2. Noise and Bioacoustics Team, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, OH 45226, USA
3. Department of Speech-Language Pathology and Audiology, Federal University of Santa Catarina, Florianopolis 88040-370, SC, Brazil
4. Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of Sao Paulo, Bauru 17012-901, SP, Brazil
5. Department of Public Health, Federal University of Santa Catarina, Florianopolis 88040-370, SC, Brazil