622: BARRETT’S OESOPHAGUS SURVEILLANCE VERSUS ENDOSCOPY AT NEED STUDY (BOSS): A RANDOMIZED CONTROLLED TRIAL
Old O., Jankowski J., Attwood SE., Stokes C., Rasdell C., Kendall C., Zimmermann A., Massa MS., Love S., Sanders S., Deidda M., Briggs A., Hapeshi J., Foy C., Moayyedi P., barr H.