van der Hock, Sarah, Lara Gibson, and Nita Dhupar. 2025. “Ruptured Ectopic Pregnancy With Negative Serum Beta-Human Chorionic Gonadotropin: A Case Report and Literature Review”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 14 (5):1618-22. https://doi.org/10.18203/2320-1770.ijrcog20251251.