Methods: 1 DGR was measured using ambulatory bilirubin monitor (Bilitec2000) and pH monitor in the proximal stomach simultaneously, in 48 healthy volunteers from 20-year-old to 26-year-old.

• 方法：1应用便携式胆汁监测仪(Bilitec2000)和便携式pH监测仪同步监测48例健康青年志愿者的胃内24小时胆汁反流和pH变化情况。