1. Acid base status at birth and neurodevelopment at four and one-half years;Dennis;Am J Obstet Gynecol,1989
2. 27th ed. Dorland's illustrated medical dictionary 1988 WB Saunders Philadelphia
3. A practical approach to umbilical artery pH and blood gas determinations;Duerbeck;Obstet Gynecol,1992
4. Severe acidosis and subsequent neurologic status;Fee;Am J Obstet Gynecol,1990
5. NIH publication no. 85-1149,1985