A prospective study of plasma homocyst(e)ine and risk of myocardial infarction in US physicians. - Stampfer,M.J.; Malinow,M.R.; Willett,W.C.; Newcomer,L.M.; Upson,B.; Ullmann,D.; Tishler,P.V.; Hennekens,C.H. (JAMA, 1992)