1. Department of Internal Medicine, Division of Endocrinology and Nuclear Medicine (H.D., J.C.P.-S., M.R., B.O.-P., E.M., P.M., C.S., A.F.-P.), A-8036 Graz, Austria
2. Center for Medical Research (A.T., A.S.), Medical University of Graz, A-8036 Graz, Austria