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Analysis of warning letters issued by the US Food and Drug Administration to clinical investigators, institutional review boards and sponsors: a retrospective study

 

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Dec 20223922
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Feb 20238200
Mar 20232200
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Aug 20231900
Sep 20233200
Oct 20238028
Nov 202348018
Dec 20237216
Jan 20245828
Feb 20246725
Mar 20244040
Total9512686791

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