Hickok, D E <br/><br/>
The frequency of breech presentation by gestational age at birth: a large population-based study.  [electronic resource] 

 -  American journal of obstetrics and gynecology  Mar 1992 
 - 851-2 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9378 
<br/><br/><label>Standard No.: </label>10.1016/0002-9378(92)91347-d  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birth Certificates<br/>Breech Presentation<br/>Female<br/>Gestational Age<br/>Humans<br/>Labor, Obstetric<br/>Pregnancy<br/>Ultrasonography, Prenatal