(infant* OR baby OR babies OR NICU OR neonat* OR perinatal OR preemi* OR prematurity OR Premi OR premie OR premies OR preterm OR bairn* OR newborn* OR suckling* OR weanling*)
consider ORing in species-specific words if searching for articles focused on non-humans
consider Oring in birth and obstetric words if appropriate
e.g.
birth OR births OR deliver* OR labor OR obstetric* OR cesarean OR caesarean OR forcep* OR extract*
