endoscopy
Five-hundred thirty-five patients evaluated between October 1989 and       February 1997 at the University of California San Francisco Swallowing Center had       a diagnosis of GERD established by upper gastrointestinal series, endoscopy,       manometry, and pH monitoring.
Five-hundred thirty-five patients evaluated between October 1989 and       February 1997 at the University of California San Francisco Swallowing Center had       a  @PREDICAT$  of  @OBJECT$  established by upper gastrointestinal series,  @SUBJECT$ ,       manometry, and pH monitoring.