Efficacy of MaZiRenWan, a Chinese Herbal Medicine, in Patients With Functional Constipation in a Randomized Controlled Trial

Linda L.D. Zhong, Chung Wah Cheng, Wai Kun, Liang Dai, Dong Dong Hu, Zi Wan Ning, Hai Tao Xiao, Cheng Yuan Lin, Ling Zhao, Tao Huang, Ke Tian, King Hong Chan, Ting Wa Lam, Xiao Rui Chen, Chi Tak Wong, Min Li, Ai Ping Lu, Justin C.Y. Wu^*, Zhao Xiang Bian^*