TY - JOUR A1 - Sonnega, A. A1 - Faul, J.D. A1 - Ofstedal, M.B. A1 - Langa, K.M. A1 - Phillips, J.W.R. A1 - Weir, D.R. T1 - Cohort profile: The Health and Retirement Study (HRS) Y1 - 2014 DO - 10.1093/ije/dyu067 VL - 43 IS - 2 ER -