Endoscopy, Table of Contents Endoscopy 1998; 30(6): 570-574DOI: 10.1055/s-2007-1001346 Editorial © Georg Thieme Verlag KG Stuttgart · New York Perception and Interpretation: The Problem of the Visible Vessel P. Swain The London Hospital Medical College, Gastrointestinal Science Research London, UK Recommend Article Abstract PDF Download Buy Article PDF (1379 kb)