MiRNA-21 Regulates Bronchial Epithelial Cell Proliferation by Activating Tgfβ1/Smad Signaling Pathway and Its Correlation with Asthma Severity in Children - Kang, Yang; Bai, Minghui; Deng, Liling; Fan, Linbo; Wang, Xing (Iranian Journal of Public Health, 2021)