Retraction.  [electronic resource] 

 -  Journal of neurology, neurosurgery, and psychiatry  Dec 2018 
 - e9 p.  digital 
<br/><br/> Publication Type: Journal Article; Retraction Notice 
<br/><br/><label>ISSN: </label>1468-330X 
<br/><br/><label>Standard No.: </label>10.1136/jnnp.74.5.574ret  doi