Feretis, C Endoscopic implantation of Plexiglas (PMMA) microspheres for the treatment of GERD. [electronic resource] - Gastrointestinal endoscopy Apr 2001 - 423-6 p. digital Publication Type: Clinical Trial; Journal Article ISSN: 0016-5107 Standard No.: 10.1067/mge.2001.113912 doi Subjects--Topical Terms: AdultAgedEsophagoscopy--methodsEsophagus--chemistryFemaleGastroesophageal Reflux--therapyHumansHydrogen-Ion ConcentrationInjections, SubcutaneousMaleMicrospheresMiddle AgedPolymethyl Methacrylate--administration & dosageUltrasonography