TY - JOUR A1 - Trinidad, J.P. A1 - Warner, M. A1 - Bastian, B.A. A1 - Minino, A.M. A1 - Hedegaard, H. T1 - Using literal text from the death certificate to enhance mortality statistics: Characterizing drug involvement in deaths Y1 - 2016 JF - National Vital Statistics Reports VL - 65 IS - 9 ER -