Rashid, T., S. Ilyas, and M. Zulfiqar. “Anogenital Ulceration; An Unusual Presentation of Mixed Connective Disease”. Journal of Pakistan Association of Dermatologists, vol. 27, no. 1, June 2017, pp. 83-85, https://www.jpad.com.pk/index.php/jpad/article/view/1034.