Mustafa, G., Akber, G., Lodhi, J. K., Mutahir, M., & Malik, A. (2014). UMBILICAL PILONIDAL SINUS. Journal of Ayub Medical College Abbottabad, 26(1), 100–101. Retrieved from https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/1645