Funding for this research was provided by:
National Natural Science Foundation of China (81903784, 82074000)
Natural Science Foundation of Hunan Province (2020JJ4878)
the Scientific Research Project of Department of Education of Hunan Province (20K136)
NHC Key Laboratory of Birth Defect for Research and Prevention (KF2020002)
Received: 29 January 2021
Accepted: 5 March 2021
First Online: 17 March 2021
: These procedures involved feces samples collection were approved by Ethics Committee of Central South University.
: All participates signed informed consent.
: The authors declare that they have no competing interests.