References

1. Koffel E, Bramoweth AD, Ulmer CS. Increasing access to and utilization of cognitive behavioral therapy for insomnia (CBT-I): a narrative review. J Gen Intern Med 2018;33:955-962. https://doi.org/10.1007/s11606-018-4390-1
2. Trauer JM, Qian MY, Doyle JS, Rajaratnam SM, Cunnington D. Cognitive behavioral therapy for chronic insomnia: a systematic review and meta-analysis. Ann Intern Med 2015;163:191-204. https://doi.org/10.7326/M14-2841
3. Walsh JK. Clinical and socioeconomic correlates of insomnia. J Clin Psychiatry 2004;65 Suppl 8:13-19.