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Visual impairment and spectacle coverage rate in Baoshan district, China: population-based study

Mengjun Zhu, Xiaowei Tong, Rong Zhao, Xiangui He, Huijuan Zhao, Meiling Liu and Jianfeng Zhu*

BMC Public Health 2013, 13:311  doi:10.1186/1471-2458-13-311

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