M. Khazaali, D. Khazaeli, H. Moombeini, and J. Jafari-Samim, “Supine Ultrasound-guided Percutaneous Nephrolithotomy with Retrograde Semi-rigid Ureteroscopic guidwire retrieval: Description of an Evolved Technique”, Urol J, vol. 14, no. 6, pp. 5038–5042, Nov. 2017.