1. The Appendix;Berk,1975
2. Diagnosis and treatment of acute intestinal obstruction;Berry;J.A.M.A.,1952
3. Toxic megacolon in ulcerative colitis;Binder;Gastroenterology,1974
4. Colonic ileus and its differential roentgen diagnosis;Bryk;A.J.R.,1967
5. Submucosal gallbladder emphysema;Campbell;J.A.M.A.,1974