title: [Diagnosis of the upper gastrointestinal tract diseases in pregnancy].
authors.forename: L A
authors.initials: LA
authors.lastname: Polozhenkova
authors.forename: S G
authors.initials: SG
authors.lastname: Burtkov
authors.forename: E S
authors.initials: ES
authors.lastname: Liashko
authors.forename: M Iu
authors.initials: MIu
authors.lastname: Kon'kov
mesh_terms: D004935:Esophageal Diseases / Q000175:diagnosis*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications