Revolus, O., J. V. Alexis, J. R. Alfred, and B. Gilles. “Unruptured Tubal Pregnancy at 18 Weeks: A Case Report”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 13, no. 9, Aug. 2024, pp. 2499-02, doi:10.18203/2320-1770.ijrcog20242507.