6Buysse DJ, Reynolds CF, Monk TH, et al. The Pittsburgh Sleep Quality Index (PSQI): a new in strument for psychiatric research and practice [J].Psychiatry Res, 1989,28(2) : 193-213.
7Roth T. Insomnia definition, prevalence, etiology, and consequences[J]. J Clin Sleep Med, 2007,3 (5) : S7 - S10.
8Mai E, Buysse DJ. Insomnia: Prevalence, Impact,Pathogenesis, Differential Diagnosis, and Evaluation[J]. Sleep Med Clin,2008,3(2):167-174.
