Effect of low-moderate intensity traditional Chinese exercises combined with acupuncture on patients with stable chronic obstructive pulmonary disease: study protocol for a randomized controlled trial - Duan, Hongxia; Bao, Yidie; Jiang, Linhong; Li, Peijun; Wang, Yingqi; He, Yuchen; Deng, Xinliao; Wu, Weibing; Zhang, Wei; Liu, Xiaodan (Frontiers in Medicine, 2025)