Nasrul, E. (2006) “Immunocompetent Expression of CD4+ T Cell and CD8+ T Cell, TNF-alpha and INF-gamma in Patient with Chronic Hepatitis C”, The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy, 7(2), pp. 33–37. doi: 10.24871/72200633-37.