Beijing
China
COVID-19 vaccine, mucosal vaccine, children, adolescents, clinical trial
bronchopulmonary dysplasia, pulmonary hypertension, machine learning, prediction model, oversampling
Bronchopulmonary Dysplasia, Cord blood mononuclear cell (CB-MNC), Umbilical cord mesenchymal stem cells, Cytokines, Whole Transcriptome Sequencing, Noncoding RNA
Preterm infants, Ibuprofen, Treatment, Patent Ductus Arteriosus, Cohort study