Nelson, Karin B <br/><br/>
Authors' reply to Lees.  [electronic resource] 

 -  BMJ (Clinical research ed.)  02 2017 
 - j835 p.  digital 
<br/><br/> Publication Type: Letter; Comment 
<br/><br/><label>ISSN: </label>1756-1833 
<br/><br/><label>Standard No.: </label>10.1136/bmj.j835  doi