5Marls RW, Berman AL, Silverman MM. Comprehensive textbook of suieidology[ M]. New York: The Guilford Press, 2000.
6Hawton K, Heeringen KV. The international handbook of suicide and attempted suicide[M]. Chiehester: John Wiley and Sons, Ltd. 2000.
7Beantrais AL, Joyce PR, Mulder RT, et al, Prevalence and comorbidty of mental disorders in persons making serious suicide attempts: a casecontrol study [J]. Am J Psychiatry, 1996,153(8) :1009.