Effect of Pentoxifylline on Levels of Pro-inflammatory Cytokines During Chronic Hepatitis C. - Gutierrez-Reyes, G.; Lopez-Ortal, P.; Sixtos, S.; Cruz, S.; Ramirez-Iglesias, M. T.; Gutierrez-Ruiz, M. C.; Sanchez-Avila, F.; Roldan, E.; Vargas-Vorackova, F.; Kershenobich, D. (Scandinavian Journal of Immunology, 2006)