1Jiyuan Shi and Ya Gao did equal to this work
Correspondence to: Jinhui Tian, Evidence-Based Medicine Centre, School
of Basic Medical Sciences, Lanzhou University, No.199, Donggang West
Road, Lanzhou City, 730000, Gansu Province, China. (
Email:tianjh996@163.com).
Correspondence to: Junhua Zhang, Evidence-Based Medicine Center, Tianjin
University of Traditional Chinese Medicine, No. 312 Anshanxi Street,
Nankai District, Tianjin 300193, China.(
Email:zjhtcm@foxmail.com.)