1. Division of Gastroenterology and Hepatology Hospital das Clinicas, University of São Paulo School of Medicine São Paulo Brazil
2. Biostatistics and Bioinformatics Research Center Samuel Oschin Comprehensive Cancer Institute, Cedars Sinai Medical Center Los Angeles California USA
3. Laboratory of Medical Investigation of Immunopathology of Schistosomiasis (LIM 06) Institute of Tropical Medicine of University of São Paulo São Paulo Brazil