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Keywords:
Accidental DeathsAge FactorsBehaviorCauses Of DeathComparative StudiesContraceptionContraceptive AgentsContraceptive Agents, FemaleContraceptive MethodsDemographic FactorsFamily PlanningHigh Risk WomenMortalityOral ContraceptivesPopulationPopulation At RiskPopulation CharacteristicsPopulation DynamicsReproductionResearch MethodologySmokingStudies