Phillips, Kenneth R <br/><br/>
To the Editor: Vitamin B12 deficiency.  [electronic resource] 

 -  Cleveland Clinic journal of medicine  Jan 2016 
 - 15 p.  digital 
<br/><br/> Publication Type: Letter; Comment 
<br/><br/><label>ISSN: </label>1939-2869 
<br/><br/><label>Standard No.: </label>10.3949/ccjm.83c.01001  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans<br/>Vitamin B 12 Deficiency