Minimal Standard Terminology for Digestive Endoscopy: Results of Prospective Testing and Validation in the GASTER Project - Delvaux, M.; Crespi, M.; Armengol-Miro, J. R.; Hagenmüller, F.; Teuffel, W.; Spencer, K. B.; Stettin, J.; Zwiebel, F. M. (Endoscopy, 2000)