1. Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
2. The Chinese Cochrane Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, China
3. Acupuncture and Tuina School, Hunan University of Traditional Chinese Medicine, Hunan, Changsha, China
4. Department of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
5. Department of Traditional Chinese Medicine, Ningxia Medical University, Ningxia, Yinchuan, China