The use of transcutaneous electrical acupoint stimulation to reduce opioid consumption in patients undergoing off-pump CABG: a randomized controlled trial. - Zhang, Hui; Wang, Lini; Zheng, Ziyu; Han, Jiange; Li, Lin; Yao, Wenlong; Li, Zhijian; Luo, Gang; Gao, Baobao; Shen, Jie; Dong, Hailong; Lei, Chong (Perioperative Medicine, 2024)