Journal of Southern Medical University ›› 2005, Vol. 25 ›› Issue (08): 1072-1074.

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  1. 1. 郑州大学公共卫生学院社会医学与卫生事业管理学教研室, 河南, 郑州450052;
    2. 新乡县卫生防疫站, 河南, 新乡, 453700
  • Online:2005-08-20 Published:2005-08-20

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