60
Participants
Start Date
January 1, 2021
Primary Completion Date
September 30, 2022
Study Completion Date
October 31, 2022
test Phthalates, estrogen and progesterone
test mothers Phthalates in their urine, and test estrogen and progesterone receptor in placental tissue
department of obstetrics of Second Affiliated Hospital of Wenzhou Medical University, Wenzhou
Second Affiliated Hospital of Wenzhou Medical University
OTHER