1. Physiology of the gastro-oesophageal junction and hiatus hernia;Lipshutz,1976
2. The cardia in swallowing, eructation and vomiting;Johnson;Lancet,1966
3. Opening of the cardia and hiatus hernia;Johnson;Surgery,1967
4. The lower esophageal sphincter;Cohen;Gastroenterology,1972
5. The venous plexus of the oesophagus;Kegaries;Surg Gynecol Obstet,1934