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Nielsen A, Poulsen PB, Dybro L, Kloster B, Lorentzen A, Olsen J, Kümler T.Nielsen A, et al. Among authors: olsen j.J Med Econ. 2019 Dec;22(12):1321-1327. doi: 10.1080/13696998.2019.1668193. Epub 2019 Sep 27.J Med Econ. 2019.PMID: 31516054Free article.