Siregar, D., P. S. Tahulending, Y. F. Sitanggang, and E. I. Manurung. “Quality of Life Among Indonesian During the COVID-19 Pandemic”. Open Access Macedonian Journal of Medical Sciences, vol. 10, no. E, Sept. 2022, pp. 1788-92, doi:10.3889/oamjms.2022.10607.