Effects of antenatal betamethasone on fetal doppler indices and short term fetal heart rate variation in early growth restricted fetuses - Fratelli, N; Prefumo, F; Wolf, H; Hecher, K; Visser, GHA; Giussani, D; Derks, JB; Shaw, CJ; Frusca, T; Ghi, T; Ferrazzi, E; Lees, CC; et al. (European Journal of Ultrasound / Ultraschall in der Medizin, 2021)