to assess the diagnostic accuracy of methods employed for detection of gastroesophageal reflux , 30 infants and children with symptoms of ger were evaluated by upper gastrointestinal series , gastroesophageal scintiscan , measurement of mean resting lower esophageal sphincter pressure , esophageal intraluminal ph measurement ( acid reflux test ) , and endoscopy .
C0021270
infants
C0008059
children