Those confounded vitamins: what can we learn from the differences between observational versus randomised trial evidence?

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Bibliographic Details
Title: Those confounded vitamins: what can we learn from the differences between observational versus randomised trial evidence?
Authors: Lawlor DA (AUTHOR), Smith GD (AUTHOR), Bruckdorfer KR (AUTHOR), Kundu D (AUTHOR), Ebrahim S (AUTHOR)
Source: Lancet. 5/22/2004, Vol. 363 Issue 9422, p1724-1727. 4p.
Database: Psychology and Behavioral Sciences Collection
Description
ISSN:01406736
DOI:10.1016/s0140-6736(04)16260-0