Yan, Zhi-Peng <br/><br/>
Risk factors for diabetic retinopathy in northern Chinese patients with type 2 diabetes mellitus.  [electronic resource] 

 -  International journal of ophthalmology  2016 
 - 1194-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>2222-3959 
<br/><br/><label>Standard No.: </label>10.18240/ijo.2016.08.17  doi