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A man sleeps on top of empty oxygen cylinders, waiting for a shop to open to refill his tank, in the Villa El Salvador neighborhood of Lima, early Thursday morning, Feb. 18, 2021, as the lack of medical oxygen to treat COVID-19 patients continues to be the norm in Peru. Long lines form outside private providers with many spending the night outside so as to not lose their place in line. (AP Photo/Martin Mejia)