Ahmed, I., S. Nasreen, U. Jehangir, and Z. Wahid. “Frequency of Oral Lichen Planus in Patients With Noninsulin Dependent Diabetes Mellitus”. Journal of Pakistan Association of Dermatologists, vol. 22, no. 1, Jan. 2017, pp. 30-34, https://www.jpad.com.pk/index.php/jpad/article/view/897.