Vo, Tuyen, Nhi Huynh, Dai Nguyen, Nguyen Ta, Minh Nguyen, Tai Nguyen, Huy Dang, and Ngoan Le. “COVID-19 in Cancer Patients: A Case Study in Viet Nam”. Asian Pacific Journal of Environment and Cancer 3, no. 1 (August 15, 2020): 35-40. Accessed December 1, 2021. http://waocp.com/journal/index.php/apjec/article/view/529.