Mahmood Reza Masoudi, Reza Sadeghi, and Mohammad Moqaddasi Amiri. 2023. “Survival of COVID-19 Among the Iranian Population before and After the Delta Variant Spread: 10.55131/Jphd/2023/210201”. Journal of Public Health and Development 21 (2). Bangkok, Thailand:1-12. https://doi.org/10.55131/jphd/2023/210201.