Using posterior part of the deltoid muscle as receptor and quality control with intra-operative electrophysiological examination in targeted muscle reinnervation for high-level upper extremity amputees. Issue 9 (5th May 2021) - Yin, Hua-Wei; Feng, Jun-Tao; Shen, Yun-Dong; Wang, Yan-Song; Zhang, Ding-Guo; Xu, Wen-Dong