Wang, Chunxia
Yue, Shishi
Jiang, Yaru
Mao, Yanjia
Zhao, Zhijing
Liu, Xinwei
Zhang, Xiaoqian
Pei, Dongxu
Li, Yongwei
Article History
Received: 29 January 2020
Accepted: 30 November 2020
First Online: 12 December 2020
Ethics approval and consent to participate
: This study passed the review board of The Second Affiliated Hospital of Henan University of TCM Ethics Committee. The study followed the tenets of the Declaration of Helsinki, and informed written consent was obtained from all patients and controls after we explained the nature and possible consequences of the study.
: Not applicable.
: The authors declare that they have no competing interests.