Monteagudo, A <br/><br/>
Early and simple determination of chorionic and amniotic type in multifetal gestations in the first fourteen weeks by high-frequency transvaginal ultrasonography.  [electronic resource] 

 -  American journal of obstetrics and gynecology  Mar 1994 
 - 824-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9378 
<br/><br/><label>Standard No.: </label>10.1016/s0002-9378(94)70291-8  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Amnion--diagnostic imaging<br/>Chorion--diagnostic imaging<br/>Female<br/>Humans<br/>Pregnancy<br/>Pregnancy Trimester, First<br/>Pregnancy, Multiple<br/>Ultrasonography--methods