Comparison of Pregnancy Outcomes of History-Indicated and Ultrasound-Indicated Cervical Cerclage: A Retrospective Cohort Study. - Ikechebelu JI; Dim CC; Okpala BC; Eleje GU; Joe-Ikechebelu NN; Malachy DE; Nnoruka CM; Nwajiaku LA; Okam PC; Albert IC; Okpala AN; Igbodike EP (BioMed research international, 2023)