Akbar, T. M., H. Nabi, M. A. Saqib, H. Aftab, H. Khalil, S. Khakwani, and I. R. Sahi. “Use of Skindex-29 to Assess Quality of Life in Patients With Port-Wine Stain”. Journal of Pakistan Association of Dermatologists, vol. 28, no. 2, Dec. 2018, pp. 157-62, https://www.jpad.com.pk/index.php/jpad/article/view/1232.