#	Searches	Results
1	(anti vaccin* or antivaccin*).ti,ab,id.	97
2	immunization/	4575
3	(vaccin* or immunis* or immuniz*).ti,ab,id.	8803
4	or/2‐3	8908
5	(child* or infant* or infancy or newborn* or new born* or neonat* or neo nat* or postnatal* or post natal* or baby* or babies or toddler*).ti,ab,id.	785148
6	("100" or "120" or "140" or "160" or "180").ag.	537971
7	or/5‐6	919469
8	parental attitudes/	17434
9	treatment refusal/	770
10	health attitudes/	10234
11	risk perception/	6463
12	parenting/	10065
13	parents/	39623
14	mothers/	37142
15	fathers/	10359
16	(parent* or mother* or father* or informal caregiver*).ti,ab,id.	363801
17	or/8‐16	382577
18	4 and 7 and 17	1465
19	((vaccin* or immunis* or immuniz*) and (attitude* or perspective* or perception* or belief* or concern* or view or views or accept* or hesita* or refus* or reject* or abstain* or declin* or resist* or object* or deny* or denier* or denial* or decision*)).ti,ab,id.	4384
20	((vaccination or immunisation or immunization) adj (behavior? or behaviour?)).ti,ab,id.	91
21	or/19‐20	4396
22	18 or 21	4926
23	limit 22 to "qualitative (maximizes specificity)"	403
24	22 and (qualitative research/ or interviews/ or interviewing/ or questioning/)	20
25	22 and (qualitative or group discussion? or focus group? or themes).ti,ab,id.	499
26	or/23‐25	514
27	1 or 26	601
28	limit 27 to yr=1974‐current	598