Effects of Electroacupuncture on Opioid Consumption in Patients with Chronic Musculoskeletal Pain: A Multicenter Randomized Controlled Trial.

Objectives: To evaluate the efficacy and safety of electroacupuncture in reducing opioid consumption in patients with chronic musculoskeletal pain.

Design: A randomized, participant-assessor-blinded, three-arm trial.

Setting: Participants from three pain clinics and from the public.