Atis, Gokhan, Meftun Culpan, Eyup Sabri Pelit, Cengiz Canakci, Ismail Ulus, Bilal Gunaydin, Asif Yildirim, and Turhan Caskurlu. 2017. “Comparison of Percutaneous Nephrolithotomy and Retrograde Intrarenal Surgery in Treating 20-40 Mm Renal Stones”. Urology Journal 14 (2):2995-99. https://doi.org/10.22037/uj.v14i2.3600.