Saletra-Bielińska, A., Kosińska-Kaczyńska, K., Szymusik, I., Niderla-Bielińska, J., Malejczyk, J., & Wielgoś, M. (2021). Cervical expression of elafin and secretory leukocyte peptidase inhibitor does not predict preterm delivery in twin pregnancy – results from a pilot study. Journal of Medical Science, 90(1), e490. https://doi.org/10.20883/medical.e490