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Schmitz NS, Krach LE, Coles LD, Mishra U, Agarwal SK, Cloyd JC, Kriel RL.Schmitz NS, et al. Among authors: kriel rl.PM R. 2017 Aug;9(8):743-750. doi: 10.1016/j.pmrj.2016.11.002. Epub 2016 Nov 17.PM R. 2017.PMID: 27867020Clinical Trial.