Sharma, N., and A. Saha. “Misdiagnosis of Interstitial Pregnancy Followed by Circlage Operation and Failed Induced Midtrimester Abortion: A Case Report”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 8, no. 12, Nov. 2019, pp. 5054-6, doi:10.18203/2320-1770.ijrcog20195371.