Twenty-four hour esophageal pH monitoring in normal infants.
D004947:Esophagus / Q000502:physiology*; D005260:Female; D005764:Gastroesophageal Reflux / Q000453:epidemiology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D008991:Monitoring, Physiologic; D013997:Time Factors