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Previously unidentified duplicate registrations of clinical trials: an exploratory analysis of registry data worldwide
BACKGROUND: Trial registries were established to combat publication bias by creating a comprehensive and unambiguous record of initiated clinical trials. However, the proliferation of registries and registration policies means that a single trial may be registered multiple times (i.e., “duplicates”)...
| Autores principales: | , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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BioMed Central
2016
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4946209/ https://www.ncbi.nlm.nih.gov/pubmed/27422636 http://dx.doi.org/10.1186/s13643-016-0283-8 |