Ultrasound-guided technique versus ultrasound with nerve stimulation technique for obturator nerve block in transurethral resection of bladder tumors under spinal anesthesia: a meta-analysis
Minerva Surg. 2021 Apr;76(2):192-194.
doi: 10.23736/S2724-5691.20.08577-6.
Epub 2020 Nov 11.