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A Case-Control Study to Assess the Relationship between Poverty and Visual Impairment from Cataract in Kenya, the Philippines, and Bangladesh
- Hannah Kuper,
- Sarah Polack,
- Cristina Eusebio,
- Wanjiku Mathenge,
- Zakia Wadud,
- Allen Foster
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- Published: December 16, 2008
- https://doi.org/10.1371/journal.pmed.0050244