海量图书期刊资源，随时随地畅享阅读乐趣
Spontaneous gastroesophageal reflux during double-contrast upper gastrointestinal radiography with glucagonAllan M. Haggar; Peter J. Feczko; Robert D. Halpert; Stuart M. Simms · 1982
A comparative double-blind study of esophageal barium pastesRoscoe E. Miller; Stanley M. Chernish; Rocco L. Brunelle · 1977-1978