Clinical features of respiratory distress syndrome in neonates of different gestational ages
LI Mao-Jun, WU Qing, SHI Wei, YANG Qian, TANG Bin-Zhi, CHEN Chang-Hui
CJCP . 2016, (10): 960 -964 .  DOI: 10.7499/j.issn.1008-8830.2016.10.008