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Aims Vascular endothelial growth factor (VEGF) is a primary mediator of retinal angiogenesis, and higher levels of intraocular VEGF are observed in patients with active proliferative diabetic retinopathy. Meanwhile, whether serum VEGF level is associated with diabetic retinopathy (DR) or not is controversial. Methods To investigate the significance of serum VEGF levels in diabetic patients with...
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