Schmidt, Peter <br/><br/>
Are nuchal translucency, pregnancy associated plasma protein-A or free-beta-human chorionic gonadotropin depending on maternal age? A multicenter study of 8,116 pregnancies.  [electronic resource] 

 -  Archives of gynecology and obstetrics  Sep 2007 
 - 259-62 p.  digital 
<br/><br/> Publication Type: Journal Article; Multicenter Study; Validation Study 
<br/><br/><label>ISSN: </label>0932-0067 
<br/><br/><label>Standard No.: </label>10.1007/s00404-007-0342-4  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Adult<br/>Aneuploidy<br/>Chorionic Gonadotropin, beta Subunit, Human--analysis<br/>Female<br/>Humans<br/>Likelihood Functions<br/>Maternal Age<br/>Middle Aged<br/>Nuchal Translucency Measurement<br/>Pregnancy<br/>Pregnancy-Associated Plasma Protein-A--analysis<br/>Regression Analysis<br/>Retrospective Studies