Presence of belching before or the same time of the onset of bothersome symptom after continuous CO2 injection under endoscopy in resistant FD group and non-FD group.
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资源简介：
Presence of belching before or the same time of the onset of bothersome symptom after continuous CO2 injection under endoscopy in resistant FD group and non-FD group.
创建时间：
2022-07-14
