50 years ago in the Journal of Pediatrics: the behavior of the lower esophageal sphincter in infants and its relationship to gastroesophageal regurgitation.
50 years ago in the Journal of Pediatrics: the behavior of the lower esophageal sphincter in infants and its relationship to gastroesophageal regurgitation. J Pediatr. 2014 Jan; 164(1):88.