N. C. Ng

Endoscopic mucosal incision with an insulated-tip knife for intramucosal esophageal dissection: case report.

P. Chiu, E. Ng, F. Cheung, 2005, Gastrointestinal endoscopy.

Formalin dab for refractory radiation proctitis: Preliminary Hong Kong experience

K. Leung, S. Ng, Janet F.Y. Lee, 2006 .