Depression rather than liver impairment reduces quality of life in patients with hepatitis C oleh Luciana D. Silva, Cláudia C. da Cunha, Luciana R. da Cunha, Renato F. Araújo, Vanessa M. Barcelos, Penélope L. Menta, Fernando S. Neves, Rosangela Teixeira, Gifone A. Rocha, Eliane D. Gontijo