1. This figure is obtained by deducting the endoscopic Cunningham;J, D.,1902
2. A Practice of Thoracic Surgery;d'Abreu, A.L.; Collis, J.L.; Clarke, D.B.,1971
3. The diaphragm as an anti-reflux barrier;Habibulla, K.S.;Thorax,1972
4. Identification of the gastro-esophageal mucosal junction by transmucosal potential in healthy subjects, and patients with hiatal hernia;Helm, W.J.; Schlegel, J.F.; Code, F.C.; Summerskill, W.H.J.;Gastroenterology; Birmingham B15 2TH,1965