PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 30140071-8 2018 Ret-He was significantly lower among iron-deficient infants, at 4 months mean difference (95% CI) -4.2 pg/L (-6.1 to -2.4) and at 12 months mean difference (95% CI) -3.4 pg/L (-5.0 to -1.8). Iron 37-41 ret proto-oncogene Homo sapiens 0-3 30140071-9 2018 CONCLUSIONS: This longitudinal study presents Ret-He reference intervals based on non-anemic and non-iron-deficient infants and constitutes a step towards standardizing Ret-He as a pre-anemia biomarker of iron deficiency in children. Iron 101-105 ret proto-oncogene Homo sapiens 46-49