4SANDBERG K, FASTH A, BERGER A, et al. Preterm in- fants with low immunoglobulin G levels have increased risk of neonatal sepsis but do not benefit from prophylactic immunoglobulin G[J]. J Pediatr,2000,137(5):623-628.
4Fanaroff A A, Martin R J.Neonatal-perinatal medicine : disease of the fetus and Infant[M].7th ed.Mosby: St.Louis, 2002,17-23,56-72: 287-291.
5Joseph KS, Kramer MS, Marcoux S, Ohlsson A, Wen SW, Allen A, et al. Determinants of preterm birth rates in Canada from 1981 through 1983 and from 1992 through 1994[J]. N Engl J Med, 1998 , 339(20):1434-1439.
6薜辛东.儿科学[M].北京:人民卫生出版社,2002.96.
7Mazor M, Chaim W, Maymon E, Hershkowitz R, Romero R.The role of antibiotic therapy in the prevention of prematurity[J]. Clin Perinatol , 1998 ,25(3) :659-685.
8Park KI.Transplantation of neural stem cells: cellular and gene therapy for hypoxic-ischemic brain injury[J],Yonsei Med J, 2000,41(6): 825-835.