Betti, Marta, Patrizia Vergani, Gianluca Raffaello Damiani, Antonio Pellegrino, Edoardo Di Naro, Giuseppe Trojano, Cecilia Pirovano, Massimo Stomati, and Matteo Loverro. 2018. “Unilateral Twin Tubal Pregnancy: A Case Report and Review of the Literature”. Acta Bio Medica Atenei Parmensis 89 (3), 423-27. https://doi.org/10.23750/abm.v89i3.6915.