"Among this group of large clinical trials, non-publication of results was common and the availability of results in the ClinicalTrials.gov database was limited. A substantial number of study participants were exposed to the risks of trial participation without the societal benefits that accompany the dissemination of trial results."
Non-publication of large randomized clinical trials: cross sectional analysis
CW Jones, L Handler, KE Crowell, MA Weaver, TF Platts-Mills
British Medical Journal, 2013:347:f6104
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