TY - JOUR A1 - Singh, G.K. A1 - Kogan, M.D. T1 - Widening socioeconomic disparities in US childhood mortality, 1969–2000 Y1 - 2007 DO - 10.2105/AJPH.2006.087320 JF - American Journal of Public Health VL - 97 IS - 9 ER -