The using timing  of anti-vascular endothelial growth factor  at perioperative period for proliferative diabetic retinopathy
YAN Yan-ni, WEI Wen-bin, ZHOU Jin-qiong.
International Review of Ophthalmology . 2015, (5): 333 -336 .  DOI: 10.3760/cma. j. issn. 1673-5803.2015.05.008