title: Gastroscopy: Advancing further into the horizontal part of the duodenum.
authors.affiliation: Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.
authors.forename: Wei Guang
authors.initials: WG
authors.lastname: Qiao
authors.affiliation: Department of Gastroenterology, Beijing Tsinghua Changgung Hospital, Medical Center, Tsinghua University, Beijing, China.
authors.forename: Yu Tang
authors.initials: YT
authors.lastname: Ren
authors.affiliation: Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.
authors.forename: Si De
authors.initials: S
authors.lastname: Liu
authors.affiliation: Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.
authors.forename: Fa Chao
authors.initials: FC
authors.lastname: Zhi
mesh_terms: D000328:Adult; D004386:Duodenum / Q000601:surgery*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000209:etiology; D005773:Gastroscopy / Q000379:methods*; D006801:Humans; D008551:Melena / Q000175:diagnosis* / Q000209:etiology