S. Akšam, S. Plešinac, J. Dotlić, D. Kocijančić Belović, and M. Marjanović Cvjetićanin, “Influence of chorionicity on healthy twin pregnancy outcome”, Vojnosanit Pregl, vol. 77, no. 10, Feb. 2021, doi: 10.2298/VSP180505025A.