we conclude that ( 1 ) 24-hour ph monitoring of the esophagus may have a continuing role in research aspects of ger , ( 2 ) 12-hour ph monitoring is a highly accurate test that could be adapted to patients ' work schedules or to outpatient telemetry , and ( 3 ) postprandial ph testing is a practical , less expensive , and accurate method of diagnosing ger that could be utilized by any gastroenterology diagnostic unit .
C0022885
test
C0430022
method