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Participation of epidemiologists and/or biostatisticians and methodological quality of published controlled clinical trials
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May 2007324
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Jul 2007423
Aug 20077114
Sep 2007636
Oct 2007542
Nov 2007700
Dec 2007333
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Feb 2008954
Mar 2008723
Apr 2008720
May 2008920
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Jan 2009230
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Apr 20141951
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Jun 2015794
Jul 2015412
Aug 2015731
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Apr 2016300
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Jul 20161122
Aug 2016900
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Jan 20172120
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Aug 2017440
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Apr 202127196
May 2021886
Jun 2021332
Jul 20211092
Aug 2021884
Total26182070696