title: Mortality gradients and disease exchanges: comparisons from old England and colonial America.
authors.forename: M J
authors.initials: MJ
authors.lastname: Dobson
mesh_terms: D003643:Death; D003710:Demography; D004194:Disease; D049690:History, Ancient; D049692:History, Early Modern 1451-1600; D049691:History, Medieval; D049711:History, Modern 1601-; D013223:Statistics as Topic / Q000266:history*; D006113:United Kingdom; D014481:United States