200
Participants
Start Date
April 1, 2025
Primary Completion Date
April 30, 2026
Study Completion Date
April 30, 2026
observation group
in the group, no intervention was given, and the preterm infants were diagnosed with respiratory distress syndrome(RDS)
control group
in the group, no intervention was given, but the preterm infants were diagnosed without respiratory distress syndrome(RDS)
Women and Children's hospital of Chonqing Medical University, Chongqing
Chongqing Medical Center for Women and Children
OTHER
Daping Hospital and the Research Institute of Surgery of the Third Military Medical University
OTHER