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A Variation on Single-Stage Cluster Sampling Used in A Survey of Elderly People in Shanghai

Levy, P., Yu, ESH., Liu, WT., Zhang, MY., Wang, ZY., Wong, SC., & Katzman, R. (1988). A Variation on Single-Stage Cluster Sampling Used in A Survey of Elderly People in Shanghai. International Journal of Epidemiology, 17(4), 931-933.

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