TangBi Formula for Painful Diabetic Distal Symmetric Polyneuropathy: A Multicenter, Randomized, Double‐Blind, Placebo‐Controlled and Parallel‐Group Trial. - Zhao, Xuefei; An, Xuedong; Cui, Yashan; Dong, Liu; Fang, Zhaohui; Zheng, Zhonghua; Zuo, Xinhe; Gao, Huailin; Gao, Tianshu; Ni, Qing; Lian, Fengmei; Tong, Xiaolin (Journal of Diabetes, 2025)