title: Preface.
authors.affiliation: Program in Molecular and Genetic Epidemiology, Harvard School of Public Health, 677 Huntington Avenue, Building 2, 2nd Floor, Room 209, Boston, MA 02115, USA. geslick@hsph.harvard.edu <geslick@hsph.harvard.edu>
authors.forename: Guy D
authors.initials: GD
authors.lastname: Eslick
authors.forename: Michael
authors.initials: M
authors.lastname: Yelland
mesh_terms: D002637:Chest Pain / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004636:Emergency Service, Hospital; D006801:Humans