title: Pyeloduodenal fistula diagnosed by esophagogastroduodenoscopy.
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Ohashi Medical Center, Tokyo, Japan.
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Kitagawa
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Ohashi Medical Center, Tokyo, Japan.
authors.forename: Koichiro
authors.initials: K
authors.lastname: Sato
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Ohashi Medical Center, Tokyo, Japan.
authors.forename: Iruru
authors.initials: I
authors.lastname: Maetani
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