CJCP     2020 22 (7):  721-727    ISSN: 1008-8830  CN: 43-1301/R Efficacy and safety of less invasive surfactant administration in the treatment of neonatal respiratory distress syndrome: a Meta analysis HUO Meng-Yue, MEI Hua, ZHANG Yu-Heng, LIU Chun-Zhi, HU Ya-Nan, SONG Dan Department of Neonatology, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, China Received: 2020-01-08  Revised: 2020-06-12  Online: null Supporting info