Research Service;
Veterans Affairs Nebraska-Western Iowa Health Care System;
Department of Internal Medicine;
982000 Nebraska Medical Center;
Department of Pathology;
University of Colorado Denver;
Department of Anatomic Pathology;
Harbor UCLA Medical Center;
Department of Biochemistry and Molecular Biology;
985870 Nebraska Medical Center;
Methyl; balance; S-adenosylmethionine; S-adenosylhomocysteine; Guanidinoacetate; Alcohol;