1. Gastrointestinal dilation;Kozarek,1991
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3. Complications of esophageal dilation and guidelines for their prevention;Tulman;Gastrointest Endosc,1981
4. Esophageal dilation: personal experience with current instruments and techniques;Webb;Am J Gastroenterol,1988
5. Balloon dilatation of upper digestive tract strictures;Lindor;Gastroenterology,1985