title: Debate on the paper by Diez Roux.
authors.affiliation: International Institute for Global Health, United Nations University, Kuala Lumpur, Malaysia, tony.capon@unu.edu.
authors.forename: Anthony
authors.initials: A
authors.lastname: Capon
authors.affiliation: International Institute for Global Health, United Nations University, Kuala Lumpur, Malaysia, siri@unu.edu.
authors.forename: José
authors.initials: J
authors.lastname: Siri
mesh_terms: D002947:Cities; D006801:Humans; D014504:Urban Health