3. Derogatis LR, Morrow GR, Fetting J, Penman D, Piasetsky S, Schmale AM, et al. The prevalence of psychiatric disorders among cancer patients. JAMA 1983;249(6):751-757.
4. de Jonge P, Ormel J, Slaets JP, Kempen GI, Ranchor AV, van Jaarsveld CH, et al. Depressive symptoms in elderly patients predict poor adjustment after somatic events. Am J Geriatr Psychiatry 2004;12(1):57-64.
8. Ell K, Xie B, Wells A, Nedjat-Haiem F, Lee PJ, Vourlekis B. Economic stress among low-income women with cancer: effects on quality of life. Cancer 2008;112(3):616-625.
9. Lim YO, Yoon HS, Nam IS, Kim YJ, Lee HJ, Choi KW. Stress process of older cancer patient's depression undergoing Chemotherapy: focus on spirituality, optimism, and family support. J Korean Gerontol Soc 2014;34(4):821-842.
10. Park KS, Choi ES. Problem-Solving Therapy: A Positive Approach to Clinical Intervention.. Seoul: HAKJISA corp; 2008. p. 139-143. .
14. Nezu AM, Nezu CM, Houts PS, Friedman SH, Faddis S. Relevance of problem-solving therapy to psychosocial oncology. J Psychosoc Oncol 1999;16(3-4):5-26.
15. Nezu AM, Nezu CM, Felgoise SH, McClure KS, Houts PS. Project Genesis: assessing the efficacy of problem-solving therapy for distressed adult cancer patients. J Consult Clin Psychol 2003;71(6):1036-1048.
16. Hopko DR, Armento ME, Robertson SM, Ryba MM, Carvalho JP, Colman LK, et al. Brief behavioral activation and problem-solving therapy for depressed breast cancer patients: randomized trial. J Consult Clin Psychol 2011;79(6):834-849.
18. Malouff JM, Thorsteinsson EB, Schutte NS. The efficacy of problem solving therapy in reducing mental and physical health problems: a meta-analysis. Clin Psychol Rev 2007;27(1):46-57.
19. Bell AC, D'Zurilla TJ. Problem-solving therapy for depression: a meta-analysis. Clin Psychol Rev 2009;29(4):348-353.
20. Nezu AM, D'Zurilla TJ. Problem-solving therapy : a positive approach to clinical intervention. New York: Springer Publishing Company; 2006.
22. Yoon HS, Koo BM, Lee K, Lee JY. The effectiveness of problem-solving treatment on geriatric depression. J Korean Gerontol Soc 2010;30(3):871-894.
23. Lee HK. Handbook of Positive psychology. Seoul: HAKJISA corp; 2008.
24. Irwin M, Artin KH, Oxman MN. Screening for depression in the older adult: criterion validity of the 10-item center for epidemiological studies depression scale (CES-D). Arch Intern Med 1999;159(15):1701-1704.
25. Kim HS, Park SM, Jang SN, Kwon S. Depressive symptoms, chronic medical illness, and health care utilization: findings from the Korean Longitudinal Study of Ageing (KLoSA). Int Psychogeriatr 2011;23(8):1285-1293.
26. D'Zurilla TJ, Nezu AM, Maydeu-Olivares Cancer. Social problem-solving inventory Revised (SPSI-R): Technical manual. North Tonawanda: Multi-Health Systems; 2002.
27. Kim SY. Statistical analysis based on experimental studies. Survey Research Spring Conference. June 9, 2007. Seoul National University: Seoul: The Korean Association for Survey Research; 2007.
28. Baer RA. Mindfulness training as a clinical intervention: a conceptual and empirical review.. CLIN PSYCHOL-SCI PR 2003;10(2):125-143.
29. Panza F, Frisardi V, Capurso C, D'Introno A, Colacicco AM, Imbimbo BP, et al. Late-life depression, mild cognitive impairment, and dementia: possible continuum? Am J Geriatr Psychiatry 2010;18(2):98-116.