Fu, Fengping
Wang, Fengqin
Ding, Jian
Xiao, Li
Song, Xia
Article History
Received: 14 December 2022
Accepted: 8 March 2023
First Online: 30 March 2023
Declarations
:
: The authors have no conflicts of interest to declare.
: This study was approved by the institutional review board at Shandong Provincial Maternal and Child Health Care Hospital. All the pregnant women were recruited together from Shandong Provincial Maternal and Child Health Care Hospital. Written informed consents were obtained from all pregnant women who agreed to serve as fecal samples donors.