| http://www.w3.org/ns/prov#value | - Despite these resources and the success of their public health reformers and urban planners in improving their quality of life, these world cities still confront onerous health risks -- albeit to different degrees -- for at least six problems: 1) the re-emergence of infectious diseases (e.g. tuberculosis, and the arrival of new ones, e.g. AIDS); 2) water and air pollution; 3) an increase in the ho
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