CanadaOntarioBritish ColumbiaAlbertaQuebecManitobaNova ScotiaNorthwest TerritoriesSaskatchewanNunavutYukon TerritoryNewfoundland and LabradorInuitsPrince Edward IslandArctic RegionsNew BrunswickTime FactorsRetrospective StudiesSingle-Payer SystemIndians, North AmericanMolecular Sequence DataGeeseTreatment OutcomeRisk FactorsNational Health ProgramsEmigration and ImmigrationDisease OutbreaksIncidenceQuestionnairesPrevalenceAge FactorsPopulation SurveillanceNorth AmericaStructure-Activity RelationshipInfant, NewbornSeasonsAustraliaFollow-Up StudiesCohort StudiesEmigrants and ImmigrantsPhysiciansData CollectionAge Distribution