Items where Author is "Campbell, Marion K"
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McDonald, Alison M, Knight, Rosemary C, Campbell, Marion K, Entwistle, Vikki A, Grant, Adrian M, Cook, Jonathan A, Elbourne, Diana R, Francis, David, Garcia, Jo, Roberts, Ian and Snowdon, Claire (2006) What influences recruitment to randomised controlled trials? A review of trials funded by two UK funding agencies Trials, 7 (9). ISSN 1745-6215