title: [How to improve the endoscopic diagnosis of early upper gastrointestinal cancers].
authors.affiliation: Email: zhangst@ccmu.edu.cn.
authors.forename: Shutian
authors.initials: S
authors.lastname: Zhang
authors.forename: Peng
authors.initials: P
authors.lastname: Li
mesh_terms: D004724:Endoscopy; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis*; D006801:Humans; D041742:Upper Gastrointestinal Tract