[Health problems in the cities: a neglected urgency].
Salem
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UFR Géographie, Laboratoire Espace, Santé et Territoire, Université de Paris X, Nanterre, France.
D000349:Africa / Q000453:epidemiology; D003695:Delivery of Health Care; D004196:Disease Outbreaks; D006801:Humans; D011156:Population Density; D014504:Urban Health