Aurangzeb, Mehmud, and Farsheed Sartaj. “A Case of Sacro-Coccygeal Chordoma Mimicking A Pilonidal Sinus”. Journal of Postgraduate Medical Institute 16, no. 1 (September 22, 2011). Accessed November 22, 2024. https://jpmi.org.pk/index.php/jpmi/article/view/767.