1. From Bevital A/S, Armauer Hansens Hus, Bergen, Norway (ØM and PMU); LOCUS for Homocysteine and Related Vitamins, University of Bergen, Bergen, Norway (ØM, SH, JS, SEV, and PMU); the Hormone Laboratory, Haukeland University Hospital, Bergen, Norway (SH); the Section for Pharmacology, Institute of Medicine, University of Bergen, and Haukeland University Hospital, Bergen, Norway (SH); and the Depart