Controversy over "contradiction": Should randomized trials always trump observational studies?
Fletcher, Astrid E;
(2009)
Controversy over "contradiction": Should randomized trials always trump observational studies?
American journal of ophthalmology, 147 (3).
pp. 384-386.
ISSN 0002-9394
DOI: https://doi.org/10.1016/j.ajo.2008.04.024
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