求翻译：将80例冠心病高脂血症患者随机分为观察组与和照组，每组40例。观察组给予每天口服一次40 mg的立普妥，对照组给予每天口服一次20 mg的立普妥，治疗4个月后观察并比较两组的疗效。是什么意思？

80 cases of coronary heart disease in patients with hyperlipidemia were randomly divided into observation group and control group (n = 40 cases). The observation group were treated with daily oral administration of 40 mg of Lipitor, the control group was given orally once a day 20 mg of Lipitor, eff

Legislation will be 80 coronary heart disease High Blood patients random divided into observation group to group and 40 in each group. To give the group a day 40 mg oral once the financial and control group, the daily 20 mg oral once the Lipitor, 4 months after treatment and to compare the efficacy

Divides into the observation group 80 example coronary disease hyperlipemia patient with with to illuminate the group stochastically, each group of 40 examples.The observation group gives takes orally time 40 mg to set up Pu every day properly, the control group gives takes orally time 20 mg to set

80 cases of Hyperlipidemia in patients with coronary heart disease were randomly assigned to observation group and as a group, each group of 40 cases. Observer groups giving oral administration of 40 mg of Lipitor a day, the control group given oral 20 mg of Lipitor a day, after treatment for 4 mont

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