Esophageal hiatus sliding hernia; an endoscopic study.

[1]  A. Silk,et al.  Endoscopy in hernia at the esophageal hiatus. , 1953, California medicine.

[2]  A. R. Hufford Flexi-Rigid, Optical Eosphagoscope , 1949 .

[3]  R. Schindler A safe diagnostic optical esophagoscope. , 1948, Journal of the American Medical Association.

[4]  H. J. Moersch LVII Hiatal Hernia , 1938 .