Items where Author is "Ramsahai, Roland R."
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Journal Article
Palmer, Tom M. and Ramsahai, Roland R. and Lawlor, Debbie A. and Sheehan, Nuala A. and Didelez, Vanessa (2012) Re: "credible mendelian randomization studies : approaches for evaluating the instrumental variable assumptions". American Journal of Epidemiology, 176 (5). 457-458; author reply 458. ISSN 0002-9262