title: [Is esophagus and stomach biopsy mandatory in endoscopic diagnosis of reflux esophagitis].
authors.forename: P
authors.initials: P
authors.lastname: Semler
mesh_terms: D001707:Biopsy, Needle; D004942:Esophagitis, Peptic / Q000175:diagnosis*; D004945:Esophagoscopy; D004947:Esophagus / Q000473:pathology*; D006801:Humans; D013270:Stomach / Q000469:parasitology*