High-activity placenta-derived mesenchymal stem cells combined with low-intensity extracorporeal shock wave therapy for diabetic erectile dysfunction: a prospective randomized controlled trial. - Ji, Yun-Hua; Zhang, Yi-Fan; Tan, Xiao; Hou, Hao-Zhong; Yao, Zhen; Zhang, Bo (Stem Cell Research & Therapy, 2025)