Neurobehavioral and neurochemical effects of occupational lead exposure were investigated by WHO Neurobehavioral Core Test Battery (NCTB)testing and a series of
In the four decades from 1951 to 1990,the six provinces or autonomous regions(Xinjiang,Gansu,Qinghai,Ningxia,Xizang,and Nei Monggol)reported a total of 26 065 s