1. Department of Biology, São Paulo State University (UNESP), São José do Rio Preto Campus, Rua Cristóvão Colombo 2265, 15054-000 São José do Rio Preto, SP, Brazil
2. Base Hospital, Ambulatory of Gastrohepatology, Avenida Brigadeiro Faria Lima 5544, 15090-000 São José do Rio Preto, SP, Brazil
3. João Paulo II Hospital, Rua Doutor Eduardo Nielsem 960, 15030-070 São José do Rio Preto, SP, Brazil
4. School of Medicine, São Paulo University (USP), Avenida Dr. Arnaldo 455, 01246-903 São Paulo, SP, Brazil
5. School of Medicine, FAMERP, Avenida Brigadeiro Faria Lima 5416, 15090-000 São José do Rio Preto, SP, Brazil