Guidelines are needed for evaluations that use cluster approach

被引：7

作者：

Elbourne, D ^{[1
]}

机构：

[1] Univ London London Sch Hyg & Trop Med, Dept Epidemiol & Populat Sci, Med Stat Unit, London WC1E 7HT, England

来源：

BRITISH MEDICAL JOURNAL | 1997年 / 315卷 / 7122期

关键词：

D O I：

10.1136/bmj.315.7122.1620a

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

引用

收藏

页码：1620 / 1621

页数：2

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