1. Donga (2020, January 23). 1 or 2 Out of 10 Korean Older Adults over 60 Suffer from Depression. Available online: https://www.donga.com/news/society/article/.
2. Lee, Y.K., Kim, S.J., Hwang, N.H., Im, J.M., Ju, B.H., Nangkung, E.H., Lee, S.H., Jung, K.H., Kang, E.H., and Kim, K.R. (2020). 2020 National survey of Older Koreans, Korea Institute for Health and Social Affairs.
3. Depression in Long-Term Care;Thakur;J. Am. Med. Dir. Assoc.,2008
4. Comparison of correlation in late-life between urban and rural areas;Kang;J. Korean Gerontol. Soc.,2012
5. Geriatric depression and cognitive impairment;Steffens;Psychol. Med.,2007