Mustafa, Ghulam, Ghulam Akber, Junaid Khan Lodhi, Muhammad Mutahir, and Asim Malik. “UMBILICAL PILONIDAL SINUS”. Journal of Ayub Medical College Abbottabad 26, no. 1 (March 1, 2014): 100–101. Accessed May 14, 2025. https://www.jamc.ayubmed.edu.pk/index.php/jamc/article/view/1645.