2Shaffer D.Developmental Psychology·Childhood and Adolesenee[M].Sixth Edition,Wadsworth Ltd,2001:143-338.
3Shevell M,Ashwal S,Donley D,et al.Practice parameter:evaluation of the child with global developmental delay:report of the Quality Standards Subcommittee of the American Academy of Neurology and the Practice Committee of the Child Neurology Society[J].Neurology,2003,3(60):367-80.
