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Abstract
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Keywords:
AmericasBiologyContraceptionContraception ResearchContraceptive AgentsContraceptive Agents, EstrogenContraceptive Agents, FemaleContraceptive Agents, ProgestinContraceptive MethodsDesogestrelDeveloped CountriesEndocrine SystemEstrogensEthinyl EstradiolFamily PlanningGovernment AgenciesHormonesLegislationNorth AmericaNorthern AmericaOral ContraceptivesOrganizationsPhysiologyProduct ApprovalUnited StatesUsfdaUsphs