Pillai A, Albersheim SG, Berris K, Albert AY, Osiovich H, Elango R. Corrected fortification approach improves the protein and energy content of preterm human milk compared with standard fixed-dose fortification. Arch Dis Child Fetal Neonatal Ed. 2021 May;106(3):232-237. doi: 10.1136/archdischild-2019-317503. Epub 2020 Oct 16. PMID: 33067263.