Fig. 3From: Efficacy and safety of minimally invasive percutaneous nephrolithotomy versus retrograde intrarenal surgery in the treatment of upper urinary tract stones (> 1 cm): a systematic review and meta-analysis of 18 randomized controlled trialsForest plots of SFR. A overall SFR; B SFR (stone 1-2 cm); C. SFR (stone>2 cm)Back to article page