Suwarni, Sri, RB. Soemanto, and Aris Sudiyanto. 2018. “Effect of Dementia, Family Support, Peer Support, Type of Residence, and Marital Status on Quality of Life of the Elderly in Surakarta, Central Java”. Journal of Epidemiology and Public Health 3 (1):83-94. https://jepublichealth.com/index.php/jepublichealth/article/view/65.