Commentary: we still need observational studies of drugs--they just need to be better.
Smeeth, Liam;
Douglas, Ian;
Hubbard, Richard;
(2006)
Commentary: we still need observational studies of drugs--they just need to be better.
International journal of epidemiology, 35 (5).
pp. 1310-1311.
ISSN 0300-5771
DOI: https://doi.org/10.1093/ije/dyl134
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