1. Sleep disorders and sleep deprivation: an unmet public health problem;Institute of Medicine,2006
2. International classification of diseases (ICD-10);World Health Organization,1991
3. Diagnostic and statistical manual of mental disorders (DSM-IV-TR);American Psychiatric Association,2000
4. International classification of sleep disorders: diagnostic and coding manual (ICSD-2);American Academy of Sleep Medicine,2005
5. Insomnia, trouble sleeping, and complementary and alternative medicine: Analysis of the 2002 national health interview survey data;Pearson;Arch Intern Med,2006