Xu, Liang <br/><br/>
Refractive error in urban and rural adult Chinese in Beijing.  [electronic resource] 

 -  Ophthalmology  Oct 2005 
 - 1676-83 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article 
<br/><br/><label>ISSN: </label>1549-4713 
<br/><br/><label>Standard No.: </label>10.1016/j.ophtha.2005.05.015  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Age Distribution<br/>Aged<br/>Aged, 80 and over<br/>China--epidemiology<br/>Cohort Studies<br/>Female<br/>Humans<br/>Male<br/>Middle Aged<br/>Prevalence<br/>Prospective Studies<br/>Refractive Errors--epidemiology<br/>Rural Population--statistics & numerical data<br/>Sex Distribution<br/>Urban Population--statistics & numerical data