Dang, Thanh Phong, et al. “THE PROPORTION OF PULMONARY TUBERCULOSIS PATIENTS WITH AFB (-) AND RELATED FACTORS AT TAN BIEN MEDICAL CENTER IN 2019”. Cantho Journal of Medicine and Pharmacy, no. 29, June 2023, pp. 1-7, https://tapchi.ctump.edu.vn/index.php/ctump/article/view/1575.