1	(maternal OR mother OR mothers OR maternity OR child OR children OR childhood OR infant OR infants OR pediatric OR paediatric OR fetal OR foetal OR perinatal OR pregnant OR pregnancy OR childbirth OR birth OR labor OR labour) AND (death OR deaths OR mortality) AND (audit OR audits OR enquiry OR enquiries OR inquiry OR inquiries OR meeting OR meetings)	299
2	(death review OR mortality review OR death reviews OR mortality reviews) AND (maternal OR mother OR mothers OR maternity OR child OR children OR childhood OR infant OR infants OR pediatric OR paediatric OR fetal OR foetal OR perinatal OR pregnant OR pregnancy OR childbirth OR birth OR labor OR labour)	83
3	(stillbirth OR stillbirths OR sudden infant death OR sudden infant deaths OR sids OR cot death OR cot deaths OR crib death OR crib deaths) AND (audit OR audits OR enquiry OR enquiries OR inquiry OR inquiries OR meeting OR meetings)	34
4	confidential enquiry OR confidential enquiries OR “confidential inquiry” OR “confidential inquiries” OR cemach OR cmace OR cemd OR cmde OR saving mothers lives OR making pregnancy safer OR making childbirth safer	0
5	(verbal autopsy OR verbal autopsies OR social autopsy OR social autopsies) AND (maternal OR mother OR mothers OR maternity OR child OR children OR childhood OR infant OR infants OR pediatric OR paediatric OR fetal OR foetal OR perinatal OR pregnant OR pregnancy OR childbirth OR birth OR labor OR labour)	22
6	(near miss OR significant events OR critical events OR critical incidents OR significant event OR critical event OR critical incident) AND (audit OR audits OR enquiry OR enquiries OR inquiry OR inquiries OR meeting OR meetings) AND (maternal OR mother OR mothers OR maternity OR child OR children OR childhood OR infant OR infants OR pediatric OR paediatric OR fetal OR foetal OR perinatal OR pregnant OR pregnancy OR childbirth OR birth OR labor OR labour)	0
7	1 OR 2 OR 3 OR 4 OR 5 OR 6	438