TPO and Thrombocytopenia: There were negative correlations in non-SGA infants with thrombocytopenia, but not in SGA infants with thrombocytopenia, between the platelet count and IPF (non-SGA: r2 = 0.426, p < 0.05, SGA: r2 = 0.002, ns), and between the platelet count and TPO (non-SGA: r2 = 0.240, p < 0.05, SGA: r2 = 0.024, ns) (Fig. 4c, d).