CJCP     2014 16 (6):  610-613    ISSN: 1008-8830  CN: 43-1301/R Risk factors for the failure of the InSure method in very preterm infants with respiratory distress syndrome LI Ting, JIANG Hong, LIU Dong-Yun, LI Xiang-Hong Department of Neonatology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China Received: 2013-12-19  Revised: 2014-03-20  Online: null Supporting info null