Zhang, Hong Ping, Wang, Lei, Wang, Gang, Wang, Zhen, Xu, Xian Rong, Zhou, Xian Mei, Liu, Gang, He, Lv Yuan, Wang, Jun, Hsu, Alan, Li, Wei Min. Elsevier; 2018. Chinese herbal medicine formula for acute asthma: A multi-center, randomized, double-blind, proof-of-concept trial.