Referências:
Hadlock FP, Deter RL, Carpenter RL, Park SK. Estimating fetal age: effect of head shape on BPD. AJR Am J Roentgenol 1981;137:83-5.
Hadlock FP, Deter RL, Harrist RB, Roecker E, Park SK. A date-independent predictor of intrauterine growth retardation: Femur length/abdominal circumference ratio. AJR Am J Roentgenol 1983;141:979-84.
Hadlock FP, Harrist RB, Shah Y, Park SK. The fermur length/head circumference relation in obstetric sonography. J Ultrasound Med 1984;3:439-42.
Hadlock FP, Harrist RB, Martinez-Poyer J. Fetal body ratios in second trimester: A useful tool for identifying chromosomal abnormalities? J Ultrasound Med 1992;11:81-5.
Gray DL, Songster GS, Parvin CA. Cephalic index: A gestational age-dependent biometric parameter. Obstet Gynecol 1989; 74:600-3.
Hohler CW, Quetel TA. Comparison of ultrasound femur length and biparietal diameter in late pregnancy. Am J Obstet Gynecol 1981;141:759-62.
As tabelas aqui descritas são denominadas de tabelas de valores de REFERÊNCIA. Valores acima ou abaixo dos limites esperados NÃO SIGNIFICAM ANORMALIDADE
