title: Directed cytology of the esophagus and stomach: a comparison of 3 rapid collection methods.
mesh_terms: D001707:Biopsy, Needle; D004724:Endoscopy; D004935:Esophageal Diseases / Q000473:pathology*; D006801:Humans; D013048:Specimen Handling / Q000379:methods*; D013272:Stomach Diseases / Q000473:pathology*