3Semerjian G. The role of the national institute of standards and technology in US. Techn Pol, Statem of Health, 1993,2 ( 51 ): 13.
4Needleman HL, Gunnoe C, Leviton A, et al. Deficits in psychological and classroom performance of children with elevated lead levels. N En J Med,1979,300(13): 689 - 695.
5Belling er D, Leviton A, Watemaux C, et al. Longitudinal analyses of prenatal and postnaral lead exposure and early congitive development. N En J Med, 1987,316(17): 1 037 - 1 043.
6Brody DJ, Pirkle JL, Kramer RA, et al. Blood lead levels in the US population phase 1 of the third National health and nutrition examination survey(NHANES Ⅲ ,1988 to 1991).JAMA,1994,272(4) :277- 283.
7Landrigan PJ. The world wide problem of lead in petrol. Bull World Health Organ,2002,80(10) :768.
8Wasserman GA,Staghezza-Jaramillo B, Shrout P, et al. The effect of lead exposure on behavior problems in preschool children. Am J Pub Heal,1998,88(3) :481 - 486
9Lidsky TI, Schneider JS. Lead neurotoxicity in children:basic mechanisms and clinical correlates. Brain ,2003; 126(Pt 1):5 - 19.
10Bellinger D, Leviton A, Watemaux C et al. Longitudinal analyses of prenatal and postnaral lead exposure and early congitive development. N Engl J Med,1987;316(17): 1037-43.
