Llewellyn, David J <br/><br/>
Serum 25-hydroxyvitamin D concentration and cognitive impairment.  [electronic resource] 

 -  Journal of geriatric psychiatry and neurology  Sep 2009 
 - 188-95 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0891-9887 
<br/><br/><label>Standard No.: </label>10.1177/0891988708327888  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aged<br/>Aged, 80 and over<br/>Cognition Disorders--blood<br/>Female<br/>Humans<br/>Linear Models<br/>Logistic Models<br/>Male<br/>Neuropsychological Tests<br/>Odds Ratio<br/>Vitamin D--analogs & derivatives