1. Clinical Division of Endocrinology and Metabolism, Department of Internal Medicine, III (J.H., F.W.K., M.Z., B.L., T.M.S.), Medical University of Vienna, 1090 Vienna, Austria
2. Department of Surgery (G.R.S., G.P.), Medical University of Vienna, 1090 Vienna, Austria
3. Institute of Immunology (G.J.Z.), Medical University of Vienna, 1090 Vienna, Austria