倍他乐克不良反应10例 关键词 倍他乐克 人群分布 不良反应 最小剂量 [gap=1236]Key words】Metoprolol；crowd distribution；adverse reactions；minimal dose
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3、人群分布(distribution by population)：病例多集中于20~39 岁年 龄组中，发病率男性高于女性。
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比较孕产妇死亡的地区和人群分布特点。
Comparison maternal mortality region and human distribution.
但计算机建模表明，携带该基因变种的奶农来自中欧，之后比非乳品业人群分布得广泛而迅速。
But the computer model suggests that dairy farmers carrying this gene variant probably originated in central Europe and then spread more widely and rapidly than non-dairying groups.
麻疹流行的人群分布特征有所改变，麻疹病例中有免疫史的人群所占比例明显增加。
The distribution characteristic of population in measles epidemic had some changes, the proportion of measles cases with vaccine immunization history increased obviously.
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