1. Caffeine ingestion during pregnancy: in utero exposure and possible effects;Soyka;Semin Perinatol,1981
2. Effects of caffeine consumption on pregnancy outcome: a review;Berger;J Reprod Med,1988
3. Coffee during pregnancy: a reproductive hazard?;Narod;Am J Obstet Gynecol,1991
4. Studies of caffeine and theophylline in the neonate;Soyka;Semin Perinatol,1981
5. The effect of caffeine on placental and fetal blood flow in human pregnancy;Kirkinen;Am J Obstet Gynecol,1983