1. World Health Organization. (2014). Global status report on noncommunicable diseases 2014. Retrieved August, 1, 2018, from
http://apps.who.int/iris/bitstream/handle/10665/148114/9789241564854_eng.pdf;jsessionid=DE930A0A052CB03AB73898D75695E8F7?sequence=1
.
2. World Health Organization. (2013). Global action plan for the prevention and control of noncommunicable diseases 2013–2020. Retrieved August, 1, 2018, from
http://apps.who.int/iris/bitstream/handle/10665/94384/9789241506236_eng.pdf?sequence=1
.
3. Megari, K. (2013). Quality of life in chronic disease patients. Health Psychology Research,1(3), e27.
4. GBD 2016 Disease and Injury Incidence and Prevalence Collaborators. (2018). Global, regional, and national incidence, prevalence, and years lived with disability for 354 diseases and injuries for 195 countries and territories, 1990–2017: A systematic analysis for the Global Burden of Disease Study 2017. The Lancet,392(10159), 1789–1858.
5. Schipper, H., & Olweny, C. (1996). Quality of life studies: definitions and conceptual issues. In B. Spilker (Ed.), Quality of Life and Pharmacoeconomics in Clinical Trials (pp. 11–23). Philadelphia: Lippincott-Raven Publishers.