1. Laboratory of Experimental Hepatology, Department of Pharmacology, CINVESTAV-IPN, Avenida Instituto Politécnico Nacional 2508, Colonia San Pedro Zacatenco 07360, Apartado Postal 14-740, 07000 México, D.F., Mexico
2. Lipid Research Laboratory, VA Medical Center, 50 Irving Street NW, Washington, DC 20422, USA
3. Department of Biochemistry and Molecular Medicine, The George Washington University, 2300 I Street NW, Suite 530, Washington, DC 20037, USA