Plasma homocyst(e)ine, folate and vitamin B12 concentrations and risk of early-onset coronary artery disease - Pancharuniti, N; Lewis, CA; Sauberlich, HE; Perkins, LL; Rodney, CP; Alvarez, JO; Macaluso, M; Acton, RT; Copeland, RB; Cousins, AL; Gore, TB; Cornwell, PE; Roseman, JM (Am J Clin Nutr, 1994)