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The optimal redistribution of resources when the period of spending is fixed to five years (from 2015 to 2020), and outcomes are assessed after (a) five years, (b) 10 years and (c) 20 years. Under each scenario, implementation constraints (scale-up/down of programmes capped at 30% per year) and ethical constraints (ART and PMTCT cannot decrease past 2014 levels) are observed.
