Leung, F. W., Mann, S. K., Leung, J. W., Siao-Salera, R. M., & Guy, J. (2011). The water method is effective in difficult colonoscopy - it enhances cecal intubation in unsedated patients with a history of abdominal surgery. Landes Bioscience.

Leung, Felix W., Surinder K. Mann, Joseph W. Leung, Rodelei M. Siao-Salera, và Jackson Guy. The Water Method Is Effective in Difficult Colonoscopy - It Enhances Cecal Intubation in Unsedated Patients With a History of Abdominal Surgery. Landes Bioscience, 2011.

Leung, Felix W., et al. The Water Method Is Effective in Difficult Colonoscopy - It Enhances Cecal Intubation in Unsedated Patients With a History of Abdominal Surgery. Landes Bioscience, 2011.