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Elsayyad MM, Abdel-Aal NM, Helal ME.Elsayyad MM, et al. Among authors: helal me.Arch Phys Med Rehabil. 2021 Feb;102(2):251-260. doi: 10.1016/j.apmr.2020.07.009. Epub 2020 Aug 19.Arch Phys Med Rehabil. 2021.PMID: 32827553Clinical Trial.