C. S., M., and J. Bandi. “Utility of Prophylactic Cervical Cerclage in Intra-Cytoplasmic Sperm Injection Twins: A Prospective Study”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 9, no. 10, Sept. 2020, pp. 4004-9, doi:10.18203/2320-1770.ijrcog20203971.