1. Department of Traditional Chinese Medicine, Medical College of Xiamen University, Xiamen, Fujian 361102, China
2. Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
3. Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada R3E 3P4
4. School of Basic Medical Science, Beijing University of Chinese Medicine, Beijing 100029, China
5. West China Medical Center, Sichuan University, Chengdu, Sichuan 610041, China