1 Division of Chest Pain Center, Guangdong Provincial Hospital of Chinese Medicine, the 2nd Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510120, China.
2 Division of Chest Pain Center, Guangdong Provincial Hospital of Chinese Medicine, the 2nd Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510120, China. minzhouzhang@aliyun.com.