1. 1) Xavier FM, Ferraz MP, Marc N, et al.: Elderly people’s definition of quality of life. Br J Psychiatry, 2003, 25: 31–39.
2. 2) Jung JP, Lee ER, Sin MS: The health of the elderly impact on quality of life. J Korean Acad Health Welf Elder, 2012, 4: 51–61.
3. 3) Lis K, Reichert M, Cosack A, et al.: Evidence-based guidelines on health promotion for older people: social determinants, inequality and sustainability. Innsbruck: Fonds Gesundes Österreich; 2008, 20.
4. 4) Lee JY: The past and future of health promotion projects in public health centers. J Korean Soc Health Educ Promot, 2007, 24: 135–148.
5. 5) Cha NH, Seo EJ, Sok SR: Factors influencing the successful aging of older Korean adults. Contemp Nurse, 2012, 41: 78–87.