A. E. Akhator, O. Okhionkpanmwonyi, I. Okoacha, and R. O. Ogwu, “Cervical ectopic pregnancy: a rare case report and review of literature”, Int J Reprod Contracept Obstet Gynecol, vol. 15, no. 10, pp. 4134–4136, Sep. 2026.