Percentage of reported trial registration numbers and previous registration of trials in two samples of RCTs.
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资源简介：
1International Committee of Medical Journal Editors.2RCTs registered in a WHO Primary Registry or an ICMJE-approved registry.3RCTs published in MEDLINE November 2010.4Published RCTs that were prospectively registered in the Netherlands Trial Registry (NTR).
创建时间：
2015-12-02
