Fig. 1From: Impact of preoperative 5α-reductase inhibitors on perioperative blood loss in patients with benign prostatic hyperplasia: a meta-analysis of randomized controlled trialsPRISMA flow diagram. PV: Photoselective vaporization of the prostate; RCT: Randomized controlled trial; TUPKEP: Transurethral plasmakinetic enucleation of prostateBack to article page