The Munich Polypectomy Study (MUPS): Prospective Analysis of Complications and Risk Factors in 4000 Colonic Snare Polypectomies - Heldwein, W; Dollhopf, M; Rösch, T; Meining, A; Schmidtsdorff, G; Hasford, J; Hermanek, P; Burlefinger, R; Birkner, B; Schmitt, W (Endoscopy, 2005)