Cerclage, CervicalUterine Cervical IncompetenceCervix UteriBone WiresObstetric Labor, PrematureCervical Length MeasurementPregnancy, High-RiskPremature BirthSuture TechniquesEstradiol AntagonistsPregnancy Trimester, SecondPregnancy OutcomePregnancyLabor Stage, FirstLaminariaSuturesTransilluminationPeriprosthetic FracturesFetal Membranes, Premature RuptureHydroxyprogesteronesExtraction, ObstetricalUltrasonography, PrenatalGestational AgeDilatation and CurettageTractionAdministration, IntravaginalSurgical Procedures, ElectiveCadaverJoint Prosthesis