1. Botucatu Medical School, UNESP - Univ Estadual Paulista; Botucatu Brazil
2. Department of Biosciences and Oral Diagnosis; Institute of Science and Technology, UNESP - Univ Estadual Paulista; São José dos Campos Brazil
3. Botucatu Medical School, UNESP - Univ Estadual Paulista; São Paulo Brazil
4. Department of Clinical Epidemiology and Biostatistics; McMaster University; Hamilton Canada
5. Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery; Botucatu Medical School, UNESP - Univ Estadual Paulista; Botucatu Brazil