Nguyen, Hanh, and Qin Shao. “Risk Identification and Prediction for COVID-19 Mortality: Risk Identification and Prediction for COVID-19 Mortality”. Translation: The University of Toledo Journal of Medical Sciences 9, no. 1 (September 1, 2021). Accessed October 28, 2021. https://openjournals.utoledo.edu/index.php/translation/article/view/462.