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Cervical cerclage for preterm birth prevention in twin gestation with short cervix: a retrospective cohort study.
Houlihan C, Poon LC, Ciarlo M, Kim E, Guzman ER, Nicolaides KH.
Ultrasound Obstet Gynecol 2016;48:752-6. pdf -
Shirodkar versus McDonald Cerclage for the Prevention of Preterm Birth in Women with Short Cervical Length.
Odibo AO, Berghella V, To MS, Rust OA, Althuisius SM, Nicolaides KH.
Am J Perinatol 2007;24:55-60.