Comparison of value of single-field and multiple-field fundus photography for grading diabetic retinopathy
MA Ying-nan, XU Jie, MAO Yu, XIAO Yuan-yuan, WANG Shuang, LI Yi-bin, XU Liang, LI Jian-jun
Ophthalmology in China . 2016, (3): 181 -185 .  DOI: 10. 13281/j. cnki. issn.1004-4469. 2016. 03. 008