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Forest plot presenting the meta-analysis for the effect of 5ARI treatment on blood loss. Pretreatment with finasteride significantly reduced perioperative blood loss (P < 0.00001) while dutasteride did not (P = 0.24). 5ARI: 5α-Reductase inhibitors; CI: Confidence interval; Dut: Dutasteride; Fin:Finasteride
