Commercial Chinese polyherbal preparation Zao Ren An Shen prescription for primary insomnia : a systematic review with meta-analysis and trial sequential analysis

- Zhao, Fei-Yi, Xu, Peijie, Kennedy, Gerard, Zheng, Zhen, Zhang, Wen-Jing, Zhu, Jia-Yi, Ho, Yuen-Shan, Yue, Li-Ping, Fu, Qiang-Qiang, Conduit, Russell