CJCP     2012 14 (10):  737-741    ISSN: 1008-8830  CN: 43-1301/R Prospective study on in-hospital mortality and its risk factors in very low birth weight infants requring mechanical ventilation MA Li, LIU Cui-Qing, MENG Ling-Zhi, JIAO Jian-Cheng, XIA Yao-Fang Department of Neonatology, Hebei Provincial Children′s Hospital, Shijiazhuang 050031, China. cuiqingliu@yahoo.com Received: null  Revised: null  Online: null Supporting info