二型糖尿病伴或不伴增生性糖尿病视网膜病变患者循环内皮祖细胞异常状态的研究，张静楷，Chen Qingzhong，Purpose: To investigate the number and function of circulating endothelial progenitor cells (EPC) in patients with type 2 diabetes mellitus (T2DM) with or without proliferative dia