1Hislop AA, Wigglesworth JS, Desai R. Alveolar development in the human fetus and infant[J]. Early Hum Dev, 1986,13:1-11.
2Cecilia J, Otto H, Olli MP. Expression of airway epithelial sodium channel in the preterm infant is related to respiratory distress syndrome but unaffected by repeat antenatal beta- methasone[J]. Neonatology, 2010,97 : 132-138.
3Morrison JJ, Rennie JM, Milton PJ. Neonatal respiratory morbidity and mode of delivery at term: influence of timing of elective cesarean section[J]. Br J Obstet Gynaeeol,1995, 102(2) .. 101-106.
4Raju TN, Higgins RD, Stark AR. Optimizing care and outcome for late-preterm (near-term) infants: a summary of the workshop sponsored by the National Institute of Child Health and Human Development[J]. Pediatrics, 2006, 118 (3):1207-1214.
5Kramer MS, Demissie K, Yang H. The contribution of mild and moderate preterm birth to infant mortality. Fetal and Infant Health Study Group of the Canadian Perinatal Surveillance System[J]. JAMA, 2000,16,284(7) : 843-849.
6Lumbiganon P, Laopaiboon M, Gulmezoglu AM. Method of delivery and pregnancy outcomes in Asia: the WHO global survey on maternal and perinatal health 2007-08[J]. Lancet, 2010,375(9713) :490-499.
7Ma XL, Huang CX, Lou SZ. The clinical outcomes of late preterm infants: a multi-center survey of Zhejiang, China [J]. J Perinat Med,2009,37(6):695-699.
8Howard M, Frank C. Elective primary cesarean delivery [J].NEJM,2003,348(10) :946-950.
9Guidelines for Perinatal Care[M]. Kearneysville(WV): American College of Obstetrician and Gynecology, 2002: 148- 152.
10Greenough A. Catecholamine abnormalities in transient tachypnoea of the premature newborn[J]. J Perinat Med, 1992,20(3) :223-226.
2Zanardo V, Simbi AK, Franzoi M, et al. Neonatal respiratory morbidity risk and mode of delivery at term : influence of timing of elective caesarean delivery. Acta Paediatr,2004 ,93 :643-647.
3Alderdice F, McCall E, Bailie C, et al. Admission to neonatal intensive care with respiratory morbidity following ' term' elective caesarean section. Ir Med J,2005,98:170-172.
4Wax JR, Herson V, Carignan E, et al. Contribution of elective delivery to severe respiratory distress at term. Am J Perinatol, 2002, 19:81-86.
5Gerten KA, Coonrod DV, Bay RC, et al. Cesarean delivery and respiratory distress syndrome: does labor make a difference? Am J Obstet Gynecol, 2005, 193 : 1061-1064.
6Jain L, Eaton DC. Physiology of fetal lung fluid clearance and the effect of labor. Semin Perinatol, 2006, 30 : 34-43.
7Somaschini M, Nogee LM, Sassi I, et al. Unexplained neonatal respiratory distress due to congenital surfactant deficiency. J Pediatr, 2007, 150:649- 653.