in the distal esophagus , mean velocity increased significantly ( p less than 0.01 ) to 4.98 +/- 0.38 cm/sec at 7.5 cm above the les , and then fell significantly ( p less than 0.05 ) to 2.15 +/- 0.27 cm/sec at 2.5 cm above the les .
C0014876
esophagus
C0227192
les