Registration of observational studies: is it time?

CMAJ

National Library of Medicine, National Institutes of Health, UnitedStates Department of Health and Human Services, Bethesda, USA.

Published: October 2010

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2952011PMC
http://dx.doi.org/10.1503/cmaj.092252DOI Listing

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