1. Effects of aging on gastrointestinal hormones;Khalil;Proc Clin Biol Res,1990
2. Age-related changes in the neuroendocrine system of the gut;Sandström,1999
3. Relation of gastroesophageal sphincter pressure and esophageal contractile waves and age in man;Csedes;Scand J Gastroenterol,1978
4. The influence of ageing on esophageal motility after ingestion of liquids with different viscosities;Ferrolli;Eur J Gastroenterol Hepatol,1996
5. Esophageal manometry: a comparison of findings in younger and older patients;Ribeiro;Am J Gastroenterol,1998