title: Long-term pH monitoring in the evaluation of gastroesophageal reflux.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005745:Gastric Acidity Determination; D005764:Gastroesophageal Reflux / Q000175:diagnosis* / Q000628:therapy; D006801:Humans; D007223:Infant; D008875:Middle Aged