Sleisenger MH, Scharschmidt BF, Feldman M. Gastrointestinal and Liver Disease: Pathophysiology, Diagnosis, Management
Turnage RH, Bergen P. Sleisenger MH, Scharschmidt BF, Feldman M. Gastrointestinal and Liver Disease: Pathophysiology, Diagnosis, Management. Intestinal obstruction and ileus. 1997; pp 1799-1810.