Title {1}	Efficacy and safety of Suxiao Jiuxin Pill in the treatment of stable angina (Qi stagnation and blood stasis syndrome): Study protocol of a randomized, double-blind, placebo-controlled, multi-center clinical trial
Trial registration {2a and 2b}.	ChiCTR1900021876, ChiCTR
Protocol version {3}	3-14-2019, version 1.0
Funding {4}	(1) National Outstanding Youth Science Fund Project of National Natural Science Foundation of China. Award Number: 81403352 | Recipient: Xiaofen Ruan (2) National Outstanding Youth Science Fund Project of National Natural Science Foundation of China. Award Number: 81803887 | Recipient: Yiping Li (3) Shanghai Promoting TCM 3-Year Action Program (ZY(2018-2020)-RCPY-2004) | Recipient: Xiaofen Ruan
Author details {5a}	(1) Xiaofen Ruan, Cardiovascular Department, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China; ruanxiaofeng@shutcm.edu.cn (2) Yiping Li, Cardiovascular Department, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China; liyiping@shutcm.edu.cn (3) Yuanlong Sun, Cardiovascular Department, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China; 823951231@qq.com (4) Meijun Jia, Cardiovascular Department, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China; 1852jmj@shutcm.edu.cn (5) Xiaowen Xu, Cardiovascular Department, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China; 2428420670@qq.com (6) Li Huo, Cardiovascular Department, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China; hl970204@163.com (7) Wei Song, Cardiovascular Department, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China; swei222@shutcm.edu.cn (8) Yili Yao, Cardiovascular Department, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China; yao_stephanie@shutcm.edu.cn (9) Xiaolong Wang, Cardiovascular Department, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China; wxlqy0214@163.com
Name and contact information for the trial sponsor {5b}	Sponsor: Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Zhangheng Road 528, Pudong New Area, Shanghai, China Coordinating Investigator (contact): Prof. Dr. Xiaolong Wang Cardiovascular Department Shuguang Hospital of Shanghai University of Traditional Chinese Medicine Zhangheng Road 528 Pudong New Area, Shanghai, China Tel: 086-13501991450 Email: wxlqy0214@163.com
Role of sponsor {5c}	The sponsor and the funding body have no role in the design of the study, in collection, analysis and interpretation of the data and in the writing of the manuscript