MisoprostolAbortifacient Agents, NonsteroidalOxytocicsAdministration, IntravaginalAdministration, SublingualAbortifacient Agents, SteroidalAbortion, InducedAnti-Inflammatory Agents, Non-SteroidalVacuum CurettagePostpartum HemorrhageAbortion, IncompleteCervical RipeningDouble-Blind MethodMifepristoneAbortifacient AgentsPlacebo EffectPregnancy Trimester, FirstDilatation and CurettageDiclofenacUterine HemorrhageLabor, InducedPregnancyDilatationNaproxenAnti-Ulcer AgentsAlprostadilHysteroscopyStomach UlcerAdministration, OralLabor Stage, ThirdGastrointestinal DiseasesCyclooxygenase 2 InhibitorsIbuprofenTreatment OutcomeDrug Therapy, CombinationButanonesOxytocinPiroxicamAspirinCyclooxygenase InhibitorsAdministration, BuccalCervix UteriCross-Over StudiesProstaglandins E, SyntheticEndometritisAbortion, MissedMedicine, Tibetan TraditionalPeptic UlcerPregnancy Trimester, SecondMauritaniaClostridium sordelliiErgonovineHome ChildbirthMenstruation-Inducing AgentsSuppositoriesDuodenal Ulcer