1. Center for Evidence-Based Chinese Medicine, Beijing University of Chinese Medicine, 11 North Sanhuan East Road, Chaoyang District, Beijing 100029, China
2. Primary Care and Population Sciences, Faculty of Medicine, University of Southampton, Aldermoor Health Centre, Aldermoor Close, Southampton, Hampshire SO16 5ST, UK
3. Science and Technology Division, State Administration of Traditional Chinese Medicine of the People’s Republic of China, 1 Gongti West Road, Dongcheng District, Beijing 100027, China