1. From the Institute of Medicine (E.D., R.K.B.), Section of Medical Biochemistry, University of Bergen, Haukeland University Hospital, Bergen; and the Research Institute for Internal Medicine (A.Y., T.U., B.H., J.K.D., P.A.), Section of Endocrinology (T.U.), and Section of Clinical Immunology and Infectious Diseases (P.A.), Medical Department, Rikshospitalet, University of Oslo, Oslo, Norway.