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Blix HS, Viktil KK, Moger TA, Reikvam A.Blix HS, et al. Among authors: viktil kk.Pharmacoepidemiol Drug Saf. 2008 Aug;17(8):834-41. doi: 10.1002/pds.1595.Pharmacoepidemiol Drug Saf. 2008.PMID: 18381745