2,000
Participants
Start Date
January 1, 2023
Primary Completion Date
December 31, 2023
Study Completion Date
December 31, 2025
Questionnaire survey and specimen collection
A questionnaire survey was conducted when pregnant women were enrolled, and blood were collected at 24-28 gestational weeks. Placenta and umbilical cord blood are collected during delivery.
RECRUITING
Women's Hospital School Of Medicine Zhejiang University, Hangzhou
Women's Hospital School Of Medicine Zhejiang University
OTHER