TY - JOUR A1 - Lash, T.L. A1 - Mor, V. A1 - Wieland, D. A1 - Ferrucci, L. A1 - Satariano, W. A1 - Silliman, R.A. T1 - Methodology, design and analytical techniques to address measurement of comorbid disease Y1 - 2007 JF - Journal of Gerontology: Medical Sciences VL - 62A IS - 3 SP - 281 EP - -285 ER -