1. Cho SH, Park HW, Rosenberg DM. The current status of asthma in Korea. J Korean Med Sci. 2006. 21:181–187.
2. 2006 revision: global strategy for asthma management and prevention [Internet]. Global Initiative for Asthma (GINA). 2006. cited 2010 Oct 14. GINA;Available from:
http://ginasthma.org.
3. Kim DI, Kwon HS, Song WJ, Lee SM, Kim SH, Sohn SW, et al. Characteristics of the elderly asthma. Korean J Asthma Allergy Clin Immunol. 2008. 28:98–104.
4. Ryu YJ, Chun EM, Sim YS, Lee JH. Depression and anxiety in outpatients with chronic obstructive pulmonary disease. Tuberc Respir Dis. 2007. 62:11–18.
5. Oraka E, King ME, Callahan DB. Asthma and serious psychological distress: prevalence and risk factors among US adults, 2001-2007. Chest. 2010. 137:609–616.
6. Strine TW, Mokdad AH, Balluz LS, Berry JT, Gonzalez O. Impact of depression and anxiety on quality of life, health behaviors, and asthma control among adults in the United States with asthma, 2006. J Asthma. 2008. 45:123–133.
7. Hahn HM, Yum TH, Shin YW, Kim KH, Yoon DJ, Chung KJ. A standardization study of Beck depression inventory in Korea. J Korean Neuropsychiatr Assoc. 1986. 25:487–502.
8. Spielberger CD, Gorsuch RL, Lushene RE. Manual for the State-Trait Anxiety Inventory (Form X). 1970. Palo Alto: Consulting Psychologists Press.
9. Park JW, Cho YS, Lee SY, Nahm DH, Kim YK, Kim DK, et al. Multi-center study for the utilization of quality of life questionnaire for adult Korean asthmatics (QLQAKA). J Asthma Allergy Clin Immunol. 2000. 20:467–480.
10. Moy ML, Israel E, Weiss ST, Juniper EF, Dubé L, Drazen JM, et al. Clinical predictors of health-related quality of life depend on asthma severity. Am J Respir Crit Care Med. 2001. 163:924–929.
11. Vollmer WM, Markson LE, O'Connor E, Sanocki LL, Fitterman L, Berger M, et al. Association of asthma control with health care utilization and quality of life. Am J Respir Crit Care Med. 1999. 160:1647–1652.
12. Kwon HS, Lee SH, Yang MS, Lee SM, Kim SH, Kim DI, et al. Correlation between the Korean version of asthma control test and health-related quality of life in adult asthmatics. J Korean Med Sci. 2008. 23:621–627.
13. Angulo P. Nonalcoholic fatty liver disease. N Engl J Med. 2002. 346:1221–1231.
14. Drug market statistics in 2004 [Internet]. Korea Pharmaceutical Manufacturers Association. c2009. cited 2005 Jan 23. Seoul: Korea Pharmaceutical Manufactures Association;Available from:
http://www.kpma.or.kr.
15. Ryu YJ, Chun EM, Lee JH, Chang JH. Prevalence of depression and anxiety in outpatients with chronic airway lung disease. Korean J Intern Med. 2010. 25:51–57.
16. Yohannes AM, Baldwin RC, Connolly MJ. Depression and anxiety in elderly outpatients with chronic obstructive pulmonary disease: prevalence, and validation of the BASDEC screening questionnaire. Int J Geriatr Psychiatry. 2000. 15:1090–1096.
17. Goldney RD, Ruffin R, Fisher LJ, Wilson DH. Asthma symptoms associated with depression and lower quality of life: a population survey. Med J Aust. 2003. 178:437–441.
18. Opolski M, Wilson I. Asthma and depression: a pragmatic review of the literature and recommendations for future research. Clin Pract Epidemiol Ment Health. 2005. 1:18.
19. Chun TH, Weitzen SH, Fritz GK. The asthma/mental health nexus in a population-based sample of the United States. Chest. 2008. 134:1176–1182.
20. Yellowlees PM, Kalucy RS. Psychobiological aspects of asthma and the consequent research implications. Chest. 1990. 97:628–634.
21. Moy ML, Israel E, Weiss ST, Juniper EF, Dubé L, Drazen JM, et al. Clinical predictors of health-related quality of life depend on asthma severity. Am J Respir Crit Care Med. 2001. 163:924–929.
22. Dean BB, Calimlim BM, Kindermann SL, Khandker RK, Tinkelman D. The impact of uncontrolled asthma on absenteeism and health-related quality of life. J Asthma. 2009. 46:861–866.
23. Mancuso CA, Peterson MG, Charlson ME. Effects of depressive symptoms on health-related quality of life in asthma patients. J Gen Intern Med. 2000. 15:301–310.
24. Deshmukh VM, Toelle BG, Usherwood T, O'Grady B, Jenkins CR. The association of comorbid anxiety and depression with asthma-related quality of life and symptom perception in adults. Respirology. 2008. 13:695–702.
25. Kim JT, Shin DK. A Study based on the standardization of the STAI for Korea. New Med J. 1978. 21:69–75.
26. Mancuso CA, Wenderoth S, Westermann H, Choi TN, Briggs WM, Charlson ME. Patient-reported and physician-reported depressive conditions in relation to asthma severity and control. Chest. 2008. 133:1142–1148.