@article {27927,
	title = {Effect of Providing Free Glasses on Children{\textquoteright}s Educational Outcomes in China: cluster randomized controlled Trial},
	journal = {BMJ},
	number = {349},
	year = {2014},
	pages = {g5740},
	edition = {23 September 2014},
	author = {Xiaochen Ma and Zhongqiang Zhou and Hongmei Yi and Pang, Xiaopeng and Yaojiang Shi and Qianyun Chen and Mirjam E. Meltzer and Saskia Le Cessie and Mingguang He and Scott Rozelle and Yizhi Liu and Nathan Congdon*}
}
