当前位置：在线题库搜索＞[单选题]描述性口腔流行病学最常用的研究方法是（ ）。的答案是什么？
问题：
[单选题]描述性口腔流行病学最常用的研究方法是（ ）。
A、横断面调查
B、纵向调查
C、常规资料分析
D、病历一对照研究
E、群组研究
参考答案：
A
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