1. From the Institute of Medicine, Section of Medical Biochemistry (E.D., T.H.R., O.A.G., Z.M., R.K.B.), University of Bergen; Departments of Medicine (T.H.R.) and Heart Disease (R.J.P., J.E.N.), Haukeland University Hospital, Bergen; Research Institute for Internal Medicine (B.H., T.U., F.M., P.A.), Section of Endocrinology (T.U.), Medical Department, Institute of Medical Microbiology (F.M.), Rikshospitalet University Hospital, University of Oslo, Norway.