Methods Prevalence rate of DM in 2520 middle-aged and elderly people in Sanbu city of Kaiping was investigate by the way of cluster sampling.
方法以整群抽样方式，对开平三埠城区2 520个中老年人进行糖尿病患者情况调查。
Methods Prevalence rate of DM in 2520 middle-aged and elderly people in Sanbu city of Kaiping was investigate by the way of cluster sampling.
方法以整群抽样方式，对开平三埠城区2 520个中老年人进行糖尿病患者情况调查。
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