1. Colonoscopy: history and development;Wolff;Am J Gastroenterol,1989
2. Advances in gastrointestinal endoscopy and laser therapy; the way ahead;Morris;Scand J Gastroenterol,1985
3. Preoperative endoscopy: the impact on planned surgical procedures;Gooden;Am Surg,1988
4. The impact of endoscopic technology on gastrointestinal pathology;Moyana;Ann Olin Lab Sci,1999
5. Complications of diagnostic and interventional colonoscopy;Puchner;Wien KIm Wochenschr,1996