Affiliation: | 1. Hospital Sao Rafael,Salvador,Bahia,Brazil;Gastro-Hepatology Unit,Federal University of Bahia,Salvador,Bahia,Brazil 2. Hospital Sao Rafael,Salvador,Bahia,Brazil;Centro de Pesquisas Goncalo Moniz,Fundacao Oswaldo Cruz,Salvador,Bahia,Brazil 3. Hospital Sao Rafael,Salvador,Bahia,Brazil 4. Centro de Pesquisas Goncalo Moniz,Fundacao Oswaldo Cruz,Salvador,Bahia,Brazil 5. Centro de Pesquisas Goncalo Moniz,Fundacao Oswaldo Cruz,Salvador,Bahia,Brazil;Centro de Pesquisas Aggeu Magalhaes,Fundacao Oswaldo Cruz,Recife,Pernambuco,Brazil 6. BGStats Consulting,Graz,Austria |