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Visual acuity and quality of life in patients with cataract in Doumen County, China[J] . Mingguang He,Jingjing Xu,Shaozhen Li,Kaili Wu,Sergio R Munoz,Leon B Ellwein.Ophthalmology . 1999 (8)
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Visual acuity and quality of life outcomes in patients with cataract in Shunyi County, China[J] . Jialiang Zhao,Ruifang Sui,Lijan Jia,Astrid E Fletcher,Leon B Ellwein.American Journal of Ophthalmology . 1998 (4)