Affiliation: | 1. Department of Head and Neck Surgery, University of S?o Paulo School of Medicine, S?o Paulo, Brazil;2. Department of Endocrinology, Endocrine Genetics Unit, University of S?o Paulo School of Medicine, S?o Paulo, Brazil;3. Department of Gastroenterology, University of S?o Paulo School of Medicine, University of S?o Paulo School of Medicine, S?o Paulo, Brazil;4. Department of Pathology, University of S?o Paulo School of Medicine, S?o Paulo, Brazil |