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Smuck M, Zheng P, Chong T, Kao MC, Geisser ME.Smuck M, et al. Among authors: zheng p.PM R. 2013 Apr;5(4):291-6; quiz 296. doi: 10.1016/j.pmrj.2013.01.015. Epub 2013 Feb 20.PM R. 2013.PMID: 23435199Free article.
Smuck M, Muaremi A, Zheng P, Norden J, Sinha A, Hu R, Tomkins-Lane C.Smuck M, et al. Among authors: zheng p.Spine J. 2018 Jan;18(1):15-21. doi: 10.1016/j.spinee.2017.08.262. Epub 2017 Sep 28.Spine J. 2018.PMID: 28962914Free PMC article.
Bailey JF, Agarwal V, Zheng P, Smuck M, Fredericson M, Kennedy DJ, Krauss J.Bailey JF, et al. Among authors: zheng p.J Med Internet Res. 2020 May 11;22(5):e18250. doi: 10.2196/18250.J Med Internet Res. 2020.PMID: 32208358Free PMC article.