1. A Gallop survey on heartburn across America. The Gallup Organization, Inc., 1968
2. Clinical and manometric findings in benign peptic strictures of the esophagus;Ahtaridis;Dig Dis Sei,1979
3. Evaluation of esophageal tests in the diagnosis of reflux esophagitis;Behar;Gastroenterology,1967
4. Restoration of squamous mucosa after ablation of Barrett’s esophageal epithelium;Berenson;Gastroenterology,1993
5. Relationship of hiatus hernia in reflux esophagitis;Bergstad;Scand J Gastroenterol,1986