Funding for this research was provided by:
National Science & Technology Major Project Key New Drug Creation and Manufacturing Program (2018ZX09201002-006)
National Natural Science Foundation of China (81770039, 82070045, 81570028, 81770075)
National key R&D plan (2016YFC1304104)
Zhongshan Hospital Clinical Research Foundation (2019ZSYXGG15)
Shanghai Municipal Key Clinical Specialty (shslczdzk02201)
Science and Technology Commission of Shanghai Municipality (20XD1401200)
Received: 26 September 2020
Accepted: 10 March 2021
First Online: 29 March 2021
: The protocol for collection of umbilical cord and placenta for scientific research were approved by the Health Commission of Yunnan Province. The animal experimental protocols were approved by the Animal Care and Use Committee of Zhongshan Hospital at Fudan University.
: Not applicable.
: The authors have declared no competing interests.