Cytotoxic T lymphocyte antigen-4 gene polymorphisms do not confer susceptibility to autoimmune hepatitis types 1 and 2 in Brazil - Bittencourt, Paulo Lisboa; Palacios, Selma A.; Cançado, Eduardo Luiz Rachid; Porta, Gilda; Carrilho, Flair José; Laudanna, Antônio Atílio; Kalil Filho, Jorge Elias; Goldberg, Anna Carla (American Journal of Gastroenterology, 2003)