TY - JOUR A1 - Ferrucci, L. A1 - Harris, T.B. A1 - Guralnik, J.M. A1 - Tracy, R.P. A1 - Corti, M.C. A1 - Cohen, H.J. A1 - Penninx, P.M. A1 - Wallace, R. A1 - Havlik, R. J. T1 - Serum IL-6 level and the development of disability in older persons Y1 - 1999 JF - Journal of the American Geriatrics Society VL - 47 IS - 6 SP - 639 EP - -646 ER -