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中文
The prevalence and associated risk factors of myopia in grade 1 and grade 4 primary students of defined schools in urban and rural regions of Beijing
GUO Yin, LIU Li-Juan, XU Liang, LV Yan-Yun , TANG Ping, FENG Yi, MENG Meng
Ophthalmology in China . 2012, (
2
): 127 -131 .