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Anderson ML, Califf RM, Sugarman J; participants in the NIH Health Care Systems Research Collaboratory Cluster Randomized Trial Workshop.Anderson ML, et al. Among authors: sugarman j.Clin Trials. 2015 Jun;12(3):276-86. doi: 10.1177/1740774515571140. Epub 2015 Mar 1.Clin Trials. 2015.PMID: 25733677Free PMC article.