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Liang DY, Li X, Shi X, Sun Y, Sahbaie P, Li WW, Clark DJ.Liang DY, et al. Among authors: clark dj.Pain. 2012 Feb;153(2):366-372. doi: 10.1016/j.pain.2011.10.032. Epub 2011 Dec 1.Pain. 2012.PMID: 22137294Free PMC article.
Angst MS, Koppert W, Pahl I, Clark DJ, Schmelz M.Angst MS, et al. Among authors: clark dj.Pain. 2003 Nov;106(1-2):49-57. doi: 10.1016/s0304-3959(03)00276-8.Pain. 2003.PMID: 14581110Clinical Trial.
Sabsovich I, Guo TZ, Wei T, Zhao R, Li X, Clark DJ, Geis C, Sommer C, Kingery WS.Sabsovich I, et al. Among authors: clark dj.Pain. 2008 Jul 31;137(3):507-519. doi: 10.1016/j.pain.2007.10.013. Epub 2007 Nov 26.Pain. 2008.PMID: 18035493Free PMC article.
Sabsovich I, Wei T, Guo TZ, Zhao R, Shi X, Li X, Yeomans DC, Klyukinov M, Kingery WS, Clark DJ.Sabsovich I, et al. Among authors: clark dj.Pain. 2008 Aug 15;138(1):47-60. doi: 10.1016/j.pain.2007.11.004. Epub 2008 Feb 20.Pain. 2008.PMID: 18083307Free PMC article.
Wei T, Sabsovich I, Guo TZ, Shi X, Zhao R, Li W, Geis C, Sommer C, Kingery WS, Clark DJ.Wei T, et al. Among authors: clark dj.Eur J Pain. 2009 Mar;13(3):253-62. doi: 10.1016/j.ejpain.2008.04.014. Epub 2008 Jun 12.Eur J Pain. 2009.PMID: 18554967Free PMC article.
Wei T, Li WW, Guo TZ, Zhao R, Wang L, Clark DJ, Oaklander AL, Schmelz M, Kingery WS.Wei T, et al. Among authors: clark dj.Pain. 2009 Aug;144(3):278-286. doi: 10.1016/j.pain.2009.04.020. Epub 2009 May 21.Pain. 2009.PMID: 19464118Free PMC article.