Eva
Calvo Bonacho
AstraZeneca (United Kingdom)
Cambridge, Reino UnidoAstraZeneca (United Kingdom)-ko ikertzaileekin lankidetzan egindako argitalpenak (1)
2011
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Confounding bias due to indication and severity in observational studies
Gaceta Sanitaria, Vol. 25, Núm. 2, pp. 170-172