1. Preliminary report on a long fibrescope for examination of stomach and duodenum;Hirschowitz;Mich Med Bull.,1957
2. Shepherd H Hewett D. Guidance for Obtaining a Valid Consent for Elective Endoscopic Procedures 2008
3. Sedation and Anesthesia in GI Endoscopy;Gastrointest Endosc,2008
4. Safety and Sedation During Endoscopic Procedures 2003
5. Tissue sampling and analysis;American Society for Gastrointestinal Endoscopy;Gastrointestinal Endosc.,2003