1. Appropriate use of gastrointestinal endoscopy,1989
2. Methods of granting hospital privileges to perform gastrointestinal endoscopy;Gastrointest Endosc,1988
3. Informed consent for gastrointestinal endoscopy;Gastrointest Endosc,1988
4. et al;Classen;Electronic endoscopy: the latest technology. Endoscopy,1987
5. Monitoring the patient receiving conscious sedation for gastrointestinal endoscopy: issues and guidelines;Fleischer;Gastrointest Endosc,1989