Cawyer, Chase R <br/><br/>
Estimating Gestational Age from Ultrasound: External Validation of the NICHD Formula with Comparison to the Hadlock Regression.  [electronic resource] 

 -  American journal of perinatology  08 2019 
 - 985-989 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1098-8785 
<br/><br/><label>Standard No.: </label>10.1055/s-0039-1681055  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Abdomen--embryology<br/>Biometry--methods<br/>Cross-Sectional Studies<br/>Crown-Rump Length<br/>Female<br/>Femur--embryology<br/>Fetal Development<br/>Gestational Age<br/>Head--embryology<br/>Humans<br/>Mathematics<br/>National Institute of Child Health and Human Development (U.S.)<br/>Pregnancy<br/>Pregnancy Trimester, Third<br/>Retrospective Studies<br/>Ultrasonography, Prenatal<br/>United States