title: Letter: Gastric balloon displacement in a Sengstaken tube.
mesh_terms: D004932:Esophageal and Gastric Varices / Q000628:therapy*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000628:therapy; D006801:Humans; D007441:Intubation, Gastrointestinal / Q000009:adverse effects*; D008875:Middle Aged