Sitanggang, Fardiah Tilawati, James Perdinan Simanjuntak, and Siti Sakdiah. “Study on the Relationship Between Vitamin D Deficiency and Leukocyte Ratio in Multidrug Resistant Tuberculosis Patients”. International Journal of Advanced Health Science and Technology 3, no. 6 (December 2, 2023). Accessed January 19, 2025. https://ijahst.org/index.php/ijahst/article/view/300.