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Jansson J, Willing B, Lucio M, Fekete A, Dicksved J, Halfvarson J, Tysk C, Schmitt-Kopplin P.Jansson J, et al.PLoS One. 2009 Jul 28;4(7):e6386. doi: 10.1371/journal.pone.0006386.PLoS One. 2009.PMID: 19636438Free PMC article.