Ullah, Anayat, Muhammad Kamran Khan, Ata Ur Rahman, and Riaz Ur Rehman. 2012. “PERCUTANEOUS NEPHROLITHOTOMY: A MINIMAL INVASIVE SURGICAL OPTION FOR THE TREATMENT OF STAGHORN RENAL CALCULI”. KHYBER MEDICAL UNIVERSITY JOURNAL 4 (4):156-60. https://www.kmuj.kmu.edu.pk/article/view/11124.