Abdelraheem, Omar, and Magdy Khalil. “Comparative Study Between Excision With Primary Closure Versus Limberg Flap for Treatment of Primary Sacrococcygeal Pilonidal Sinus”. International Surgery Journal 4, no. 11 (October 27, 2017): 3581–3585. Accessed October 25, 2025. https://www.ijsurgery.com/index.php/isj/article/view/2113.