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Meybohm P, Fischer DP, Geisen C, Müller MM, Weber CF, Herrmann E, Steffen B, Seifried E, Zacharowski K; German PBM Study Core Group.Meybohm P, et al. Among authors: fischer dp.BMC Health Serv Res. 2014 Nov 19;14:576. doi: 10.1186/s12913-014-0576-3.BMC Health Serv Res. 2014.PMID: 25927460Free PMC article.