Zhang, Zhenkun
Li, Zhe
Li, Ya
Wang, Yingying
Yao, Minghao
Zhang, Kun
Chen, Zhenyu
Yue, Han
Shi, Jijing
Guan, Fangxia
Ma, Shanshan http://orcid.org/0000-0002-0780-4568
Article History
Received: 23 April 2020
Accepted: 12 October 2020
First Online: 7 November 2020
Compliance with ethical standard
:
: This study was approved by the Ethics Committees of the Zhengzhou University. All procedures involving human participants were conducted in accordance with the ethical standards of the Ethics Committees of the First Affiliated Hospital of Zhengzhou University. All the animal procedures were conducted in strict accordance with the National Institutes of Health guidelines for the Care and Use of Laboratory Animals.
: The authors declare that they have no conflict of interest.
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. This study was approved by the Ethics Committees of the Zhengzhou University. All procedures involving human participants were conducted in accordance with the ethical standards of the Ethics Committees of the First Affiliated Hospital of Zhengzhou University. The human umbilical cords were obtained from healthy donors following full-term cesarean with prior informed consent.