BM	breast milk
DNA	deoxyribo nucleic acid
F	formula
GM	gut microbiome
HDM	human donated milk
HM	human milk
HMF	human milk fortifier
M	microbiome
LOS	late-onset sepsis
MOM	own mother’s breastmilk
NEC	necrotizing enterocolitis
PI	preterm infants
SIgA	stool secretory IgA
TI	term infants
TPN	total parenteral nutrition
NICU	neonatal intensive care unit
VLBW	very low birthweight