Recruitment to randomised trials: strategies for trial enrollment and participation study. The STEPS study.
Campbell MK, Snowdon C, Francis D, Elbourne D, McDonald AM, Knight R, Entwistle V, Garcia J, Roberts I, Grant A, Grant A; STEPS group.
Campbell MK, et al. Among authors: mcdonald am.
Health Technol Assess. 2007 Nov;11(48):iii, ix-105. doi: 10.3310/hta11480.
Health Technol Assess. 2007.
PMID: 17999843
Free article.
Review.