TY  - GEN
AU  - Cawyer,Chase R
AU  - Anderson,Sarah B
AU  - Szychowski,Jeff M
AU  - Skupski,Daniel W
AU  - Owen,John
TI  - Estimating Gestational Age from Ultrasound: External Validation of the NICHD Formula with Comparison to the Hadlock Regression
SN  - 1098-8785
PY  - 2020///0706
KW  - Abdomen
KW  - embryology
KW  - Biometry
KW  - methods
KW  - Cross-Sectional Studies
KW  - Crown-Rump Length
KW  - Female
KW  - Femur
KW  - Fetal Development
KW  - Gestational Age
KW  - Head
KW  - Humans
KW  - Mathematics
KW  - National Institute of Child Health and Human Development (U.S.)
KW  - Pregnancy
KW  - Pregnancy Trimester, Third
KW  - Retrospective Studies
KW  - Ultrasonography, Prenatal
KW  - United States
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1055/s-0039-1681055
ER  -