[Health problems of the big cities].
D003153:Community Health Services / Q000458:organization & administration; D004787:Environmental Pollution; D006262:Health; D006757:Hospital Units / Q000458:organization & administration; D006801:Humans; D001523:Mental Disorders / Q000209:etiology; D011320:Primary Health Care / Q000458:organization & administration; D014504:Urban Health
Los problemas de salud de las grandes ciudades.