Radioactive Hazard ReleaseGas PoisoningChemical Hazard ReleaseHealth StatusPublic HealthDelivery of Health CareProportional Hazards ModelsHealth PolicyHealth SurveysHealth Care ReformHealth PromotionMental HealthHistamine ReleaseHealthAttitude to HealthHealth Services AccessibilityHealth Care SurveysHealth PlanningPrimary Health CareHealth BehaviorQuality of Health CareCalciumInsurance, HealthHealth ServicesHealth PersonnelWorld HealthHealth EducationHealth Services Needs and DemandOral HealthTime FactorsHealth Services ResearchEnvironmental HealthHealth ExpendituresOccupational HealthPublic Health AdministrationHealth Knowledge, Attitudes, Practice