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Blix E, Pettersen SH, Eriksen H, Røyset B, Pedersen EH, Øian P.Blix E, et al.Tidsskr Nor Laegeforen. 2002 May 30;122(14):1359-62.Tidsskr Nor Laegeforen. 2002.PMID: 12098903Free article.Norwegian.
Blix E, Kumle M, Øian P.Blix E, et al.Tidsskr Nor Laegeforen. 2008 Mar 13;128(6):686-9.Tidsskr Nor Laegeforen. 2008.PMID: 18337848Free article.Review.Norwegian.
Blix E, Øian P, Kumle M.Blix E, et al.Tidsskr Nor Laegeforen. 2008 Nov 6;128(21):2436-9.Tidsskr Nor Laegeforen. 2008.PMID: 19096465Free article.Review.Norwegian.