1. [1] Negi H, Sarkar M, Raval AD, et al. Presence of depression & its risk factors in patients with chronic obstructive pulmonary disease. Indian J Med Res 2014;139(3):402-8.
2. [2] World Health Organisation. World Health Report 2001, Mental health: New understanding, New hope. Geneva (switzerland): World Health Organization; 2001.
3. [3] Hyman SE, Kandel E. Psychiatric disorders. In: Fauci AS. (eds). Harrison's principles of internal medicine. 17th edn. New York: McGraw-Hill Medical, 2008:2705- 39.
4. The association of comorbid anxiety and depression with asthma-related quality of life and symptom perception in adults;Deshmukh;Respirology,2008
5. Asthma and depression: a pragmatic review of the literature and recommendations for future research;Opolski;Clin Pract Epidemiol Ment Health,2005