1. A hard look at colonoscopy;investigations ABRAMS, Abdominal; S, J.;American Journal of Surgery,1977
2. L'echographie dans le diagnostic des pseudokystes du pancr6as;ADLOFF, M.;Annales de chirurgie,1977
3. ERCP and fine needle percutaneous transhepatic cholangiography in the diagnosis of biliary tract disease;BENJAMIN, I.S.; ALLISON, M.E.M.; MOULE, B.; BLUMGART, L.H.;Gut,1977
4. Endoscopy;BERCI, G.,1976
5. Utility of ultrasound in the differential diagnosis of acute cholecystitis;BERGER, M.; SMITH, E.; HOLM, H.H.; MASCATELLO, V.;Archives of Surgery,1977