Table 1. The Search Strategy of the Association Between Prenatal Exposure to Household Air Pollution and Child Respiratory Health Incidence.

#1	Search “Air Pollution”[MeSH]
#2	(air pollution[MeSH Terms] OR pollution[MeSH Terms] OR “indoor air pollution”[MeSH Terms] OR “household air pollution”[MeSH Terms] OR HAP) OR (“volatile organic compounds”[MeSH Terms] OR VOCs) OR (“particulate matter”[MeSH Terms] OR PM2.5 OR PM10) OR (“carbon monoxide”[MeSH Terms] OR CO) OR (“nitrogen dioxide”[MeSH Terms] OR NO2) OR (“sulfur dioxide”[MeSH Terms] OR SO2) OR (benzene[MeSH Terms] OR formaldehyde[MeSH Terms] OR toluene[MeSH Terms]) OR (“polycyclic aromatic hydrocarbons”[MeSH Terms] OR PAHs)
#3	#1 OR #2
#4	Search “Maternal Exposure”[MeSH]
#5	(maternal exposure[MeSH Terms] OR prenatal exposure[MeSH Terms] OR maternal exposure OR pregnancy exposure OR pregnancy)
#6	#4 OR #5
#7	Search “Child”[MeSH]
#8	(child[MeSH Terms] OR pediatric[MeSH Terms] OR infant[MeSH Terms] OR baby[MeSH Terms] OR newborn[MeSH Terms] OR neonate[MeSH Terms])
#9	#7 OR #8
#10	Search “Respiratory health”
#11	(respiratory health[MeSH Terms] OR lung function[MeSH Terms] OR respiratory symptoms[MeSH Terms] OR respiratory infections[MeSH Terms] OR asthma[MeSH Terms] OR chronic obstructive pulmonary disease[MeSH Terms] OR COPD OR bronchitis[MeSH Terms] OR wheezing[MeSH Terms] OR pneumonia[MeSH Terms] OR respiratory diseases[MeSH Terms])
#12	#10 OR #11
#13	#3 AND #6 AND #9 AND #12