Fig. 3From: Distribution of maternal red cell antibodies and the risk of severe alloimmune haemolytic disease of the foetus in a Chinese population: a cohort study on prenatal managementKaplan-Meier curve of the gestational age interval free from severe HDF between groups; HDF: haemolytic disease of the foetus;——: anti-D; ---: anti-D combined with others; ……: Other single-antibodyBack to article page