Electroacupuncture for acute postoperative pain during coughing after video-assisted thoracoscopic surgery: study protocol for a pilot randomized controlled trial - Dan-Tong Zhang; Guang-Xia Shi; Jin-Ying Jia; Feng-Wei Tan; Yu Qi; Wei Liang; Zhi-Jun Zhao; Ping Yuan; Ya Gao; Guo-Chao Zhang; Xue-Hui Liu; Jing-Wen Yang; et al. (PLoS ONE, 2025)