title: [pH-metry/impedance-24 hours pH-metry].
authors.forename: Julio
authors.initials: J
authors.lastname: Pérez de la Serna y Bueno
authors.forename: Antonio
authors.initials: A
authors.lastname: Ruiz de León San Juan
mesh_terms: D017097:Electric Impedance; D050782:Esophageal pH Monitoring; D005764:Gastroesophageal Reflux / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy; D006801:Humans