we studied the 24-hour ph of the rhinopharyngeal mucosa in 3 groups of children : 3 healthy children acting as controls , 1 child with known gastro-oesophageal reflux but without rhinopharyngeal pathology , and 2 children with both gastro-oesophageal reflux and mucosal obstruction of the nose and pharynx unascribable to the usual causes .
C0027442
rhinopharyngeal
C0031354
pharynx