Cataract surgery in Canada.
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D019985:Benchmarking / Q000592:standards*; D002170:Canada; D002387:Cataract Extraction / Q000592:standards*; D006801:Humans; D009885:Ophthalmology / Q000458:organization & administration*; D012955:Societies, Medical / Q000458:organization & administration*; D014850:Waiting Lists