TY - JOUR A1 - Carlson, E. A1 - Tsvetarsky, S. T1 - Birth weight and infant mortality in Bulgaria’s transition crisis Y1 - 2000 DO - 10.1046/j.1365-3016.2000.00242.x JF - Pediatric and Perinatal Epidemiology VL - 14 SP - 159 EP - -162 ER -