title: Combined gastric and esophageal 24-hour pH monitoring in patients with gastroesophageal reflux.
mesh_terms: D004941:Esophagitis / Q000209:etiology; D004947:Esophagus / Q000378:metabolism*; D005746:Gastric Emptying; D005753:Gastric Mucosa / Q000378:metabolism*; D005764:Gastroesophageal Reflux / Q000378:metabolism* / Q000503:physiopathology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008365:Manometry; D008991:Monitoring, Physiologic / Q000379:methods*; D011446:Prospective Studies; D013997:Time Factors