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Owen explains why sometimes it is not straightforward to call a prospective or a retrospective study. Ref (Vinogradova 2015 BMJ https://www.bmj.com/content/350/bmj.h2135/)
By Owen5
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Owen explains why sometimes it is not straightforward to call a prospective or a retrospective study. Ref (Vinogradova 2015 BMJ https://www.bmj.com/content/350/bmj.h2135/)