1. Department of Internal Medicine, Universidade Federal de São Paulo (USP), São Paulo, Brazil
2. Department of Internal Medicine, Universidade Federal do Paraná (HC-UFPR), Curitiba, Brazil
3. Department of Gastroenterology and Endoscopy, Universidade Federal do Paraná (HC-UFPR), Curitiba, Brazil
4. Department of Communication Disorders, Universidade Tuiuti do Paraná, Curitiba, Brazil