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L
Lawlor, DA;
Davey Smith, G;
Bruckdorfer, KR;
Kundu, D;
Ebrahim, S;
(2004)
Observational versus randomised trial evidence.
Lancet, 364 (9436).
p. 755.
ISSN 0140-6736
DOI: https://doi.org/10.1016/S0140-6736(04)16926-2
Full text not available from this repository.
Lawlor, DA;
Davey Smith, G;
Kundu, D;
Bruckdorfer, KR;
Ebrahim, S;
(2004)
Those confounded vitamins: what can we learn from the differences between observational versus randomised trial evidence?
Lancet, 363 (9422).
pp. 1724-7.
ISSN 0140-6736
DOI: https://doi.org/10.1016/S0140-6736(04)16260-0
Full text not available from this repository.