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Kjelle E, Lysdahl KB, Olerud HM.Kjelle E, et al. Among authors: olerud hm.BMC Health Serv Res. 2019 Jun 26;19(1):428. doi: 10.1186/s12913-019-4276-x.BMC Health Serv Res. 2019.PMID: 31242914Free PMC article.