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König-Bachmann M, Zenzmaier C, Schildberger B.König-Bachmann M, et al. Among authors: schildberger b.BMC Health Serv Res. 2019 Aug 6;19(1):551. doi: 10.1186/s12913-019-4380-y.BMC Health Serv Res. 2019.PMID: 31387583Free PMC article.