TY - JOUR AU - Fried, P A; Watkinson, B; Gray, R TI - Differential effects on cognitive functioning in 13- to 16-year-olds prenatally exposed to cigarettes and marihuana JO - Neurotoxicol Teratol IS - 4 VL - 25 PY - 2003 DO - 10.1016/S0892-0362(03)00029-1 SP - 427 EP - 436 ER -