Hansel, B Nasogastric intubation caveat. [electronic resource] - The American journal of emergency medicine Sep 1987 - 468 p. digital Publication Type: Letter ISSN: 0735-6757 Standard No.: 10.1016/0735-6757(87)90412-8 doi Subjects--Topical Terms: HumansIntubation, Gastrointestinal--methods