230
Participants
Start Date
September 1, 2021
Primary Completion Date
August 31, 2022
Study Completion Date
October 31, 2022
cesarean section
According to the different outcomes of pregnancy, the patients were divided into natural delivery group and cesarean section group
Changsha Hospital for Maternal & Child Health Care Affiliated to Hunan Normal University, Changsha
Changsha Hospital for Maternal and Child Health Care
OTHER