title: Editorial: evolutionary medicine special issue.
authors.affiliation: Department of Mathematics and Statistics, Department of Biology, Queen's University Kingston, ON K7L 3N6, Canada tday@mast.queensu.ca.
authors.forename: Troy
authors.initials: T
authors.lastname: Day
authors.affiliation: Department of Ecology and Evolutionary Biology, Yale University New Haven, CT 06520-8106, USA stephen.stearns@yale.edu.
authors.forename: Stephen C
authors.initials: SC
authors.lastname: Stearns