- Effect of the interval between pregnancies on perinatal outcomesB P Zhu
Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, USA
N Engl J Med 340:589-94. 1999..Whether that association is due to confounding by other risk factors, such as maternal age, socioeconomic status, and reproductive history, is unknown...
- Effect of the interval between pregnancies on perinatal outcomes among white and black womenB P Zhu
Pregnancy and Infant Health Branch, Division of Reproductive Health, Centers for Disease Control and Prevention, Lansing, MI, USA
Am J Obstet Gynecol 185:1403-10. 2001..We evaluated interpregnancy interval in relation to adverse perinatal outcomes and whether the relationship differed by race...