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Ryan AS, Dobrovolny CL, Smith GV, Silver KH, Macko RF.Ryan AS, et al. Among authors: silver kh.Arch Phys Med Rehabil. 2002 Dec;83(12):1703-7. doi: 10.1053/apmr.2002.36399.Arch Phys Med Rehabil. 2002.PMID: 12474173