TY - JOUR AU - Guralnik, J M; Ferrucci, L; Simonsick, E M TI - Lower-Extremity Function in Persons over the Age of 70 Years as a Predictor of Subsequent Disability JO - N Engl J Med VL - 332 PY - 1995 DO - 10.1056/NEJM199503023320902 L3 - PubMed-ID: 7838189 SP - 556 EP - 562 N1 - et al. ER -