CJCP     2018 20 (9):  729-733    ISSN: 1008-8830  CN: 43-1301/R A comparative study of two ventilation modes in the weaning phase of preterm infants with respiratory distress syndrome LIU Wen-Qiang, XU Yan, HAN Ai-Min, MENG Ling-Jian, WANG Jun Department of Neonatology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China Received: 2018-04-12  Revised: 2018-06-27  Online: null Supporting info