1. Weight, sitting height, head size, foot length, and menstrual age of the human embryo;Streeter;Carnegie Inst Contrib Embryol,1920
2. Age of fetus determined from its measures;Trolle;Acta Obstet Gynecol Scand,1948
3. Early intrauterine development. I. The rate of growth of Caucasian embryos and fetuses between the sixth and twentieth weeks of gestation;Iffy;Pediatrics,1975
4. Fetal growth from 50 to 150 days of gestation;Birkbeck;Ann Hum Biol,1975
5. Correlation of fetal age and measurements between 10 to 26 weeks' gestation;Hern;Obstet Gynecol,1984