Efficacy and safety of Chinese medicine JCM-16021 for diarrhea-predominant irritable bowel syndrome: study protocol for a multi-center, randomized, double-blind, placebo controlled... oleh Ya Zheng, Jessica Ching, Chung Wah Cheng, Wai Ching Lam, Kam Leung Chan, Xuan Zhang, Pui Yan Lam, Xing Yao Wu, Linda L. D. Zhong, Pei Hua Cao, Cho Wing Lo, Pui Kuan Cheong, Zhixiu Lin, Matthew Koh, Justin Wu, Zhao Xiang Bian