Safitri, Elok Ariyani, Parluhutan Siagian, Bintang Yinke Magdalena Sinaga, and Putri Chairani Eyanoer. “Vitamin C Supplementation Improves Pulmonary Tuberculosis Patients’ Sputum Conversion During Intensive Phase Category I Treatment in Medan”. Respiratory Science 2, no. 2 (February 28, 2022): 72-77. Accessed April 17, 2026. https://respiratoryscience.or.id/index.php/journal/article/view/30.