1. Piatt, A. D., andErhard, G. A. Lesions with chronic symptoms producing pyloric obstruction and gastric decompensation.Radiology 65:503, 1955.
2. Williams, A. F. Achalasia of the pylorus in adults.Lancet 1:991, 1950.
3. Berkman, D. M. Gastric retention: Its treatment and surgical mortality.Collect Papers Mayo Clin Mayo Found 15:92, 1923.
4. Haubrich, W. S. “Complications of Peptic Ulcer.” In Gastroenterology (Vol. 1, ed. 2). Bockus, H. L., Ed. Saunders, Philadelphia, 1963.
5. Dunn, T. M. “Obstruction.” In Results of Surgery for Peptic Ulcer. Postlethwait, R. W., Ed. Saunders, Philadelphia, 1963.