Nguyen, Vu-Thanh, and Thi Diem-Chinh Ho. “Risk Factors of Lung Cancer Patients: A Survival Analysis With R”. Science and Technology Development Journal 23, no. 3 (September 2, 2020): 660-669. Accessed November 24, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/1794.