Towards 2020 vision in Singapore.
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D006285:Health Planning / Q000639:trends*; D006293:Health Promotion; D006301:Health Services Needs and Demand / Q000639:trends; D006801:Humans; D015995:Prevalence; D012846:Singapore / Q000453:epidemiology; D014786:Vision Disorders / Q000453:epidemiology / Q000517:prevention & control*; D014792:Visual Acuity; D014944:World Health Organization