NtritsouV., MavrommatisC., KostoglouC.Effect of perioperative electroacupuncture as an adjunctive therapy on postoperative analgesia with tramadol and ketamine in prostatectomy: a randomised sham-controlled single-blind trial. Acupunct Med2014; 32: 215–22. doi: 10.1136/acupmed-2013-010498