ID	Search	Items found
#1	[mh ^Infant] OR [mh “child, preschool”] OR infan*:ti,ab,kw OR young child*:ti,ab,kw OR baby:ti,ab,kw OR babies:ti,ab,kw OR “early childhood”:ti,ab,kw OR weanling*:ti,ab,kw OR “first year of life”:ti,ab,kw OR “early life”:ti,ab,kw OR ((“pre school”:ti,ab,kw OR preschool:ti,ab,kw OR kindergar*:ti,ab,kw) AND (child*:ti,ab,kw)) OR “preschool aged”:ti,ab,kw OR “preschool age”:ti,ab,kw OR “pre school age”:ti,ab,kw OR “pre school aged”:ti,ab,kw OR “kindergarten age”:ti,ab,kw OR “kindergarten aged”:ti,ab,kw	79,467
#2	(Exclusiv*:ti,ab,kw or fully:ti,ab,kw or full:ti,ab,kw) near/5 (breastfeed*:ti,ab,kw or breast feed*:ti,ab,kw or breastfed:ti,ab,kw or “breast fed”:ti,ab,kw or lactat*:ti,ab,kw)	1,813
#3	(Exclusiv*:ti,ab,kw or fully:ti,ab,kw or full:ti,ab,kw) and [mh “breast feeding”]	609
#4	(full:ti,ab,kw or fully:ti,ab,kw or exclusiv*) and (“breast milk”:ti,ab,kw or “human milk”:ti,ab,kw or “maternal milk”:ti,ab,kw or “mother's own milk”:ti,ab,kw) and (fed:ti,ab,kw or feeding*:ti,ab,kw or diet:ti,ab,kw or intake:ti,ab,kw)	566
#5	#2 OR #3 OR #4	2,044
#6	(time:ti,ab,kw or timing:ti,ab,kw or moment:ti,ab,kw or duration:ti,ab,kw or age:ti,ab,kw or month:ti,ab,kw or months:ti,ab,kw or early:ti,ab,kw or week:ti,ab,kw or weeks:ti,ab,kw or year:ti,ab,kw or years:ti,ab,kw or day:ti,ab,kw or days:ti,ab,kw or [mh “Time factors”] or [mh ^“Age Factors”])	816,392
#7	#1 AND #5 AND #6	1,639

SR: 81

CT from 1990: 1,501

Protocols (8) not imported