TY - JOUR A1 - Pappas, G. A1 - Queen, S. A1 - Hadden, W. A1 - Fisher, G. T1 - The increasing disparity in mortality between socioeconomic groups in the United States, 1960 and 1986 Y1 - 1993 DO - 10.1056/NEJM199307083290207 VL - 329 ER -