title: Bias in identifying and recruiting participants in cluster randomised trials: what can be done?
authors.affiliation: Centre for Health Sciences, Barts and the London School of Medicine and Dentistry, Queen Mary, University of London, London E1 2AT.
authors.forename: Sandra
authors.initials: S
authors.lastname: Eldridge
authors.forename: Sally
authors.initials: S
authors.lastname: Kerry
authors.forename: David J
authors.initials: DJ
authors.lastname: Torgerson
mesh_terms: D015982:Bias; D016000:Cluster Analysis; D010353:Patient Education as Topic; D018579:Patient Selection; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D015983:Selection Bias