| http://www.w3.org/ns/prov#value | - We were unable to determine the precise cause of our participants??? disability, which may not be readily apparent in the absence of a catastrophic event.57 Disability is multifactorial,30,55,58,59 and many episodes of disability are not preceded by a problem leading to hospitalization or restricted activity.30,60,61 Many older persons, for example, report common symptoms, such as pain and fatigue
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