1. Department of Head and Neck Surgery; University of São Paulo School of Medicine; São Paulo Brazil
2. Department of Endocrinology, Endocrine Genetics Unit; University of São Paulo School of Medicine; São Paulo Brazil
3. Department of Gastroenterology, University of São Paulo School of Medicine; University of São Paulo School of Medicine; São Paulo Brazil
4. Department of Pathology; University of São Paulo School of Medicine; São Paulo Brazil