2Kumazawa K, Hiramatsu Y, Masuyama H, Mizutani Y, Nakata T, Kudo T. Prediction and markers for respiratory distress syndrome: Evaluation of the stable microbubble test, surfactant protein-A and hepatocyte growth factor levels in amniotic fluid [ J ]. Acta Med Okayama, 2003, 57(1 ):25-32.
3Jeffery D, Roberta A, Avital C, et al. Dysfunction of pulmonary surfactant in chronically ventilated premature infants [ J ]. Pediatric Reaearch, 2004, 56 (6) : 697 - 702.
4Marianne D, Uffe H, Steffen H,Pekka J. Surfatant proteinD levels in umbilical cord blood and capillary blood of premature infants. The Influence of Perinatal Factors [ J ]. Pediatric Research, 2006, 50(6) :806-810.
5Paola E, Luc Z, Roberta P,et al. Surfactant kinetics in preterm in- fants on mechanical ventilation who did and did not develop bron- chopulmonary dysplasia[ J ]. Pediatric Critical Care, 2003, 31 (5) :1532 -1538.
6AG De Paoli, PG Davis, B Faber, CJ Morley. Devices and pres- sure sources for administration of nasal continuous positive airway pressure (NCPAP) in preterm neonates [ J ]. Cochrane Database Syst Rev, 2002,CD002977.
8Thome R,Thome DC.Posterior cricoidotomy lumen augmentation for treatment of subglottic stenosis in children.Arch Otolaryngol Head Neck Surg,2008,124:660-664.