title: The authors reply.
authors.forename: Dustin T
authors.initials: DT
authors.lastname: Duncan
authors.forename: Ichiro
authors.initials: I
authors.lastname: Kawachi
authors.forename: S V
authors.initials: SV
authors.lastname: Subramanian
authors.forename: Jared
authors.initials: J
authors.lastname: Aldstadt
authors.forename: Steven J
authors.initials: SJ
authors.lastname: Melly
authors.forename: David R
authors.initials: DR
authors.lastname: Williams
mesh_terms: D003132:Commerce; D015340:Epidemiologic Research Design; D006801:Humans; D012111:Residence Characteristics; D062206:Spatial Analysis; D062789:Tobacco Products