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Kaplan HC, Lorch SA, Pinto-Martin J, Putt M, Silber JH.Kaplan HC, et al. Among authors: lorch sa.BMC Health Serv Res. 2011 Jan 31;11:22. doi: 10.1186/1472-6963-11-22.BMC Health Serv Res. 2011.PMID: 21281485Free PMC article.