3Drazancic A. Antenatal care in developing countries. What should be done[J]? J Perinat Med, 2001, 29(3): 188. 被引量：1
4Subtil D, Denoit V, Le-Gcueff F, et al. The role of bacterial vaginosis in preterm labor and preterm birth: a case-control study[J]. Eur J Obster Gynecol Reprod Biol, 2002, 101(1): 41-46. 被引量：1
5Leitich H, Brunbauer M, Kaider A, et al. Cervical length and dilatation of the internal cervical os detected by vaginal ultrasonography as markers for preterm delivery[J]. Am J Obstet Gynecol, 1999, 181(10): 1465-1472. 被引量：1
6Kekki M, Kurki K, Karkkainen T, et al. Insulin-like growth factor-binding protein-1 in cervical secretion as a predictor of preterm delivery-Acta[J]. Obstet Gynecol Scand, 2001, 80(6): 546-551. 被引量：1
7Neggers Y H, Goldenberg R L, DuBard M B, et al. Increased risk of preterm delivery with elevated matermal alpha-fetoprotein and plasma zinc levels in African-American women[J]. Acta Obstet Gynecol Scand, 2000, 79(3): 160-164. 被引量：1
8Andrews W W, Hauth J C, Goldenberg R L. Infection and preterm birth[J]. Am J Perinatol, 2000, 17(7): 357-365. 被引量：1
