1. Amuk, T., Oguzhanoglu, N.K., Oguzhanoglu, A., Varma, G.S., Karadag, F.: The prevalence of dementia in nursing home residents, associated risk factors and comorbid psychiatric diagnoses. Anatol. J. Psychiatry 10, 301–309 (2009)
2. Smeltzer, S.C., Bare, B.G., Hinckle, J.L., Cheever, K.H. (eds.): Textbook of Medical-Surgical Nursing, 12th edn. Lippincott Williams & Wilkins, Philadelphia (2010)
3. Fernandez-Alanso, A.M., Pastor, M.T., Vara, C., Hhedraui, P., Perez-Lopez, F.R.: Life satisfaction, loneliness and related factors during female midlife. Maturitas 72, 88–92 (2012)
4. Boonstra, A.M., Reneman, M.F., Stewart, R.E., Post, M.W., Preuper, H.R.S.: Life satisfaction in patients with chronic musculoskeletal pain and its predictors. Qual. Life Res. 22, 93–101 (2013)
5. Feller, S., Teucher, B., Kaaks, R., Boeing, H., Vigl, M.: Life satisfaction and risk of chronic diseases in the European prospective investigation into cancer and nutrition (EPIC)-Germany study. PLoS ONE 8(8), e73462 (2013)