Diagnostic accuracy of esophageal capsule endoscopy versus conventional upper digestive endoscopy for suspected esophageal squamous cell carcinoma - Heresbach, D.; Leray, E.; d’Halluin, P. N.; Cholet, F.; Lapalus, M. G.; Gaudric, M.; Ben Soussan, E.; Gaudin, J. L.; Vahedi, K.; Quentin, V.; Filoche, B.; Saurin, J. C.; Chaussade, S.; Ponchon, T. (Endoscopy, 2010)