1. Demography of aging and the epidemiology of gastrointestinal disorders in the elderly;Goldacre;Best Pract Res Clin Gastroenterol,2009
2. Epidemiology of gastro-oesophageal reflux disease: a systematic review;Dent;Gut,2005
3. Gastroesophageal reflux disease in the elderly: more severe disease that requires aggressive therapy;Collen;Am J Gastroenterol,1995
4. Gastroesophageal reflux: the features in elderly patients;Huang;World J Gastroenterol,1999
5. Gastric acidity in older adults;Hurwitz;JAMA,1997