Authors: Sun Hongyan, Ma Ruirui, Chen Jiayu, Yu Xuhui, Yang Mingming DOI: 10.3760/cma.j.cn115989-2019051-00212 Published 2020-09-10 Cite as Chin J Exp Ophthalmol, 2020,38(09): 754-759. Abstract [View PDF] [Read Full Text] Objective To detect the changes of serum complement factors C3 and C4 in diabetic retinopathy (DR) […]