Survey on the Awareness and Prevention of Diabetic Retinopathy among Patients with Diabetes Mellitus and Impaired Glucose Tolerance in the Huamu Community of Shanghai City 
SU Jia-li*,ZHANG Yi,XU Ying
Chinese General Practice . 2018, (20): 2493 -2498 .  DOI: 10.3969/j.issn.1007-9572.2018.00.136