References:
1. Wittchen HU. Generalized anxiety disorder: prevalence, burden and cost to society. Depression Anxiety. 2001; 16:162-172.
2. Noyes R Jr, Hoehn-Saric R. The Anxiety Disorders. Cambridge UK: Cambridge University Press; 1998:37-85.
3. Logue MB, Thomas AM, Barbee JG, et al. Generalized anxiety disorder patients seek evaluation for cardiological symptoms at the same frequency as patients with panic disorder. J Psychiatr Res. 1993;27:55-59.
4. Hoehn-Saric R, McLeod DR, Zimmerli WD. Symptoms and treatment responses of generalized anxiety disorder patients with high versus low levels of cardiovascular complaints. Am J Psychiatry. 1989;146:854-859.
5. Ballenger JC, Davidson JRT, Lecrubier Y, et al. Consensus statement on generalized anxiety disorder from the international consensus group on depression and anxiety. J Clin Psychiatry. 2001;62(suppl 11):53-58.
6. McLeod DR, Hoehn-Saric R. Perception of physiological changes in normal and pathological anxiety. In: Hoehn-Saric R, McLeod DR, eds. Biology of Anxiety Disorders. Washington, DC: American Psychiatric Press; 1993:223-243.
7. Hoehn-Saric R, Borkovec TD, Nemiah JC. Generalized anxiety disorder. In: Gabbard GO, ed. Treatments of Psychiatric Disorders. 2nd ed. Washington, DC: American Psychiatric Press; 1995:1691-1722.
8. Roth T, Walsh JK, Krystal A, et al. An evaluation of the efficacy and safety of eszopiclone over 12 months in patients with chronic primary insomnia. Sleep Med. 2005; 6:487-495.
9. Hoehn-Saric R, McLeod DR. Somatic manifestations of normal and pathological anxiety. In: Hoehn-Saric R, McLeod DR, eds. Biology of Anxiety Disorders. Washington, DC: American Psychiatric Press; 1993:77-222.
