DESIGN: Random grouping and blank control trial.
设计：随机分组，空白对照实验。
DESIGN: a randomly grouping, blank control trial.
设计：随机分组、空白对照实验。
MethodsGrouping and treatment: through single center, stochastic, blank comparison clinical trial method, divides into the abdomen acupuncture group 20 examples, the blank group 20 examples.
方法分组与治疗通过单中心、随机、空白对照临床试验方法，分为腹针组20例、空白组20例。
MethodsGrouping and treatment: through single center, stochastic, blank comparison clinical trial method, divides into the abdomen acupuncture group 20 examples, the blank group 20 examples.
方法分组与治疗通过单中心、随机、空白对照临床试验方法，分为腹针组20例、空白组20例。
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