Sever, L E <br/><br/>
Seasonality in Down syndrome.  [electronic resource] 

 -  Lancet (London, England)  Apr 1977 
 - 754 p.  digital 
<br/><br/> Publication Type: Letter 
<br/><br/><label>ISSN: </label>0140-6736 
<br/><br/><label>Standard No.: </label>10.1016/s0140-6736(77)92201-2  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Down Syndrome--etiology<br/>Female<br/>Humans<br/>Maternal Age<br/>Seasons