325,596
Participants
Start Date
October 1, 2016
Primary Completion Date
December 31, 2021
Study Completion Date
December 31, 2026
Pregnant women and their offspring without intervention
Pregnant women and their offspring with those exposures of interest determined in specific research based on the database
Ningbo University, Ningbo
Ningbo Health Information Center
UNKNOWN
Ningbo University
OTHER