1. Institute of Pathology (C.R., S.A.S.-G., M.-L.H.), D-60596 Frankfurt am Main, Germany;
2. Department of Internal Medicine I, Division of Endocrinology (E.R.L., M.A.P., K.H.U., K.B.), D-60596 Frankfurt am Main, Germany;
3. Department of Pathology, Wroclaw Medical University (P.Z.), 50-368 Wroclaw, Poland
4. Department of Surgery (C.L., K.H., A.E., W.O.B.), University Hospital Frankfurt, D-60596 Frankfurt am Main, Germany;
5. Department of Surgery, Bürgerhospital (R.A.W.), D-60596 Frankfurt am Main, Germany;