Mlodawski, J., A. Chabik, M. Albrzykowski, M. Mlodawska, and G. Swiercz. “Conservatively Treated, Live, 12-Week Cervical Pregnancy – Case Report”. Journal of Education, Health and Sport, vol. 12, no. 12, Dec. 2022, pp. 311-6, doi:10.12775/JEHS.2022.12.12.047.