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Graziottin A, Gardner-Nix J, Stumpf M, Berliner MN.Graziottin A, et al. Among authors: gardner nix j.Pain Pract. 2011 Nov-Dec;11(6):574-81. doi: 10.1111/j.1533-2500.2011.00449.x. Epub 2011 Mar 16.Pain Pract. 2011.PMID: 21410639Review.