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Frick KD, Simonsick EM.Frick KD, et al. Among authors: simonsick em.Ann N Y Acad Sci. 1999;896:493-6. doi: 10.1111/j.1749-6632.1999.tb08179.x.Ann N Y Acad Sci. 1999.PMID: 10681960No abstract available.