Shah, Sayed Tahir Ali, Mohammad Tahir, Mohammad Nasir, Sohail Aziz Paracha, and Khizar Wahab. 2013. “OUTCOME OF OPEN VERSUS CLOSED SURGICAL TECHNIQUE FOR TREATMENT OF CHRONIC PILONIDAL SINUS: A RANDOMIZED CONTROL TRIAL”. KHYBER MEDICAL UNIVERSITY JOURNAL 5 (3):146-51. https://www.kmuj.kmu.edu.pk/article/view/9653.