1Mortensen J T. Smoking, sex of offspring,and risk of placental abruption, placenta previa and preeclampsia: a population-based corhort study[J]. Acta Obstet Gynecol Scand,2001,80(10) :894- 898.
2Macones G, Sehdev. The association between materal cocaine use and placenta previa[J]. Am J Obstet Gynecol, 1997, 177(5) : 1097 - 1100.
3James W H. Placenta previa:preponderance of male sex at birth[J]. Am J Epidemol,2000,15,152(2) : 195 - 196.
4Wen S W. Placenta previa and male sex at birth: result from a population-based study[J]. Paediatr Perinat Epidemiol,2000,14(4) :300 - 304.
5James W H. Sex ratis of offspring and cause of placental pathology[J]. Hum Reprod, 1995,10(6) : 1403 - 1406.
6Joan M G. Neonatal outcome with placenta previa[J]. Obstet Gynecol, 1999,93: 541 - 544.
7Edward J W. Placenta previa is not an independent risk factor for small for gestational age infant[J ]. Obstet Gynecol, 1991,77:707 - 709.
8Ananth C V, Demissie K, Smulian J C, et al. Relationship among placenta previa, fetal growth restriction, and preterm delivery: a population-based study [ J ]. Obstet Gynecol, 2001,98(2) :299 - 306.
9Bekku S. High incidence of RIDS in infant born to mother with placenta previa[J]. J Matern Fetal Med,2000,9(2) : 110 - 113.
10Lin C, Wang S. Risk for respiratory distress syndrome in preterm infants born to mother complicated by placenta previa[J].Early Hum Dev,2001,60(3) :215 - 224.