TY - JOUR A1 - Wilcox, A.J. A1 - Weinberg, C.R. T1 - Invited Commentary: Analysis of Gestational-Age-Specific Mortality -- On What Biologic Foundations? Y1 - 2004 DO - 10.1093/aje/kwh204 JF - American Journal of Epidemiology VL - 160 IS - 3 SP - 213 EP - -214 ER -