Castilla, E E <br/><br/>
Parity and Down's syndrome.  [electronic resource] 

 -  Lancet (London, England)  Dec 1994 
 - 1645-6 p.  digital 
<br/><br/> Publication Type: Letter 
<br/><br/><label>ISSN: </label>0140-6736 
<br/><br/><label>Standard No.: </label>10.1016/s0140-6736(94)90444-8  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Down Syndrome--epidemiology<br/>Female<br/>Humans<br/>Maternal Age<br/>Middle Aged<br/>Parity<br/>Pregnancy<br/>Risk Factors