TY - JOUR A1 - Popkin, B.M. A1 - Siega-Riz, A.M. A1 - Haines, P.S. T1 - A comparison of dietary trends among racial and socioeconomic groups in the United States Y1 - 1996 DO - 10.1056/NEJM199609053351006 VL - 335 IS - 10 ER -