Borja-Vergel, S., Olmedilla-Bahillo, J., Martín-Gómez, M., García-García, S. M., Parrondo-Sánchez, P., & Cancelo-Hidalgo, M. J. (2026). Spontaneous unilateral tubal twin ectopic pregnancy: case report and literature review. European Gynecology & Obstetrics, 7(3). https://doi.org/10.53260/EGO.257036