Clinical trial and effect of Bi-level continuous positive airway pressure on early pulmonary function in preterm infants with mild respiratory distress syndrome
ZHANG Hui-jie, WEN Xiao-hong, HUANG Hui-zhi, PAN Jun-ping, SHEN Pei-ting, WU Wan-yun
journal1 . 2019, (2): 197 -201 .  DOI: 10.11852/zgetbjzz2018-0332