title: The sum is more complex than its parts.
authors.forename: Astika
authors.initials: A
authors.lastname: Kappagoda
mesh_terms: D002908:Chronic Disease / Q000517:prevention & control*; D015897:Comorbidity; D015986:Confounding Factors, Epidemiologic; D006304:Health Status; D006801:Humans; D010506:Periodicals as Topic