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Vik A, Kvikstad A, Unsgård G, Jørgensen JV, Torp SH.Vik A, et al. Among authors: torp sh.Tidsskr Nor Laegeforen. 2006 Sep 21;126(18):2386-7.Tidsskr Nor Laegeforen. 2006.PMID: 17007100Norwegian.