Grzesik-Gąsior, Joanna, Ewelina Granisz, Agnieszka Bień, and Ewa Rzońca. “Midwife in the Prevention of Preterm Birth”. Journal of Education, Health and Sport 7, no. 8 (August 31, 2017): 1461–1476. Accessed March 29, 2024. https://apcz.umk.pl/JEHS/article/view/5057.