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Keyang Li · Study
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Keyang Li
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· latest 2015
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cluster: provisional
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Trends in global clinical trial registration: an analysis of numbers of registered clinical trials in different parts of the world from 2004 to 2013
2015 · 227 citations
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Trends in global clinical trial registration: an analysis of numbers of registered clinical trials in different parts of the world from 2004 to 2013
BMJ Open
·
2015
·
2 authors
·
Open access
227
citations