Harlim, Ago, and M. Zen Rahfiludin. 2018. “Indoleamine 2, 3-Dioxygenase (IDO) Levels in Leprosy Patients With Positive Serology”. Journal of Pakistan Association of Dermatologists 27 (2):131-34. https://www.jpad.com.pk/index.php/jpad/article/view/1079.