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Ludwig-Barron N, Syvertsen JL, Lagare T, Palinkas LA, Stockman JK.Ludwig-Barron N, et al. Among authors: palinkas la.Int J Drug Policy. 2015 Sep;26(9):843-50. doi: 10.1016/j.drugpo.2015.05.012. Epub 2015 Jun 6.Int J Drug Policy. 2015.PMID: 26164713Free PMC article.