1. Practical gastrointestinal endoscopy;Cotton, P.B.,1982
2. The GP and the specialist: gastroenterology;Dyer, N.H.;BrMedJ,1982
3. The clinical yield of colonoscopy;Williams, C.B.;Postgrad MedJ,1984
4. A second look at colonoscopy. Indications, failures, and costs;Abrams, J.S.;Arch Surg,1982
5. Complications of gastrointestinal radiologic procedures: I. Complications of routine fluoroscopic studies;Gelfand, D.W.;GastrointestRadiol,1980