title: [Gastroesophageal reflux disease: questions and challenges].
authors.forename: Min-hu
authors.initials: MH
authors.lastname: Chen
mesh_terms: D001706:Biopsy; D004945:Esophagoscopy; D005764:Gastroesophageal Reflux / Q000175:diagnosis*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D012680:Sensitivity and Specificity