Fatma Ayaz, Anila Basit, Rubina Nazli, Sadia Fatima, Arshad Javaid and Sheraz Fazid 2023. Association of Vitamin D Deficiency with Cathelicidin (LL-37) Level in Drug Resistant TB Patients. Pakistan Journal of Chest Medicine. 29, 1 (Mar. 2023), 04–12.