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Koch-Henriksen N, Brønnum-Hansen H, Hyllested K.Koch-Henriksen N, et al.Neuroepidemiology. 1992;11(1):1-10. doi: 10.1159/000110900.Neuroepidemiology. 1992.PMID: 1608488
Li J, Johansen C, Brønnum-Hansen H, Stenager E, Koch-Henriksen N, Olsen J.Li J, et al.Neurology. 2004 Mar 9;62(5):726-9. doi: 10.1212/01.wnl.0000113766.21896.b1.Neurology. 2004.PMID: 15007121