Autoimmune hepatitis in Brazilian patients is not linked to tumor necrosis factor 'alfa' polymorphisms at position - 308 - Bittencourt, Paulo Lisboa; Palácios, Selma Aliotti; Cançado, Eduardo Luiz Rachid; Porta, Gilda; Drigo, Sandra; Carrilho, Flair José; Laudanna, Antônio Atílio; Kalil, Jorge; Goldberg, Anna Carla (Journal of Hepatology, 2001)