1. A United States national reference for fetal growth;Alexander;Obstet Gynecol,1996
2. A standard of fetal growth for the United States of America;Brenner;Am J Obstet Gynecol,1976
3. Re-analysis of fetal biparietal diameter during gestation in Taiwanese by Altman’s method;Chang;J Med Ultrasound,1996
4. Analysis of fetal occipito-frontal diameter in normal pregnancy;Chang;J Med Ultrasound,1997
5. Fetal head circumference in normal pregnancy;Chang;J Med Ultrasound,1998