1. National Asthma Education Program Report of the Working Group on Asthma and Pregnancy: Management of asthma during pregnancy. NIH Publication number 93–3279A, Sept. 1993.
2. Fetal morbidity following potentially anoxigenic obstetric conditions. VII Bronchial asthma;Gordon;Am J Obstet Gynec,1970
3. Severity of asthma and perinatal outcome;Perlow;Am J Ob Gyne,1992
4. Perinatal outcomes in the pregnancies of asthmatic women: a prospective controlled analysis;Schatz;Am J Respir Crit Care Med,1995
5. Slow-release theophylline in pregnant asthmatics;Stenius-Aarniala;Chest,1995