title: A Tale of Two Worlds.
authors.forename: Mara
authors.initials: M
authors.lastname: Hvistendahl
mesh_terms: D003695:Delivery of Health Care; D003710:Demography; D018562:Disease Transmission, Infectious; D004467:Economics; D004651:Employment; D005523:Food Supply; D005858:Germany; D006801:Humans; D007391:International Cooperation; D008136:Longevity; D009549:Nigeria; D011153:Population; D011158:Population Growth; D014507:Urbanization