TY - JOUR AN - 20 AU - Rindi,G. AU - Klöppel,G. AU - Couvelard,A. TI - TNM staging of midgut and hindgut (neuro) endocrine tumors: a consensus proposal including a grading system. JO - Virchows Arch PY - 2007 VL - 451 SP - 757-762 M2 - 757 DO - 10.1007/s00428-007-0452-1 ER -