title: Upper gastrointestinal evaluation of asymptomatic patients with iron-deficiency anemia after a negative colonoscopy.
authors.affiliation: Servicio de Medicina Interna, Hospital Arquitecto Marcide, Ferrol, Spain
authors.forename: F J.
authors.initials: FJ
authors.lastname: Fernández-Fernández
authors.forename: E
authors.initials: E
authors.lastname: Ameneiros-Lago
authors.forename: F S.
authors.initials: FS
authors.lastname: Martínez-Debén
authors.forename: G
authors.initials: G
authors.lastname: Pía
authors.forename: P
authors.initials: P
authors.lastname: Sesma