Cite
HARVARD Citation
Xu, L. et al. (2005). Visual acuity in northern China in an urban and rural population: the Beijing Eye Study. British journal of ophthalmology. 89 (9), pp. 1089-1093. [Online].
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Xu, L. et al. (2005). Visual acuity in northern China in an urban and rural population: the Beijing Eye Study. British journal of ophthalmology. 89 (9), pp. 1089-1093. [Online].