G. J. Iwanowicz-Palus, M. Zarajczyk, A. Jakubowska, A. Bień, and E. Rzońca, “Most frequent problems of pregnant women with gestational diabetes mellitus”, Pol J Public Health, vol. 126, no. 3, pp. 107–111, Dec. 2016, doi: 10.1515/pjph-2016-0022.