Topics	Search	Query
A. Urban Slum	#1	Search "Poverty Areas"[Mesh] OR "Socioeconomic Factors"[Mesh:NoExp] OR "Poverty"[Mesh]
	#2	Search urban* [tiab] OR slum* [tiab] OR shant* [tiab] OR ghetto* [tiab] OR shack* [tiab] OR bidonville* [tiab] OR squat* [tiab] OR "informal settlement" [tiab] OR "informal urban settlement" [tiab] OR barrada [tiab] OR "barrio baja" [tiab] OR "barrio pobre" [tiab] OR taudi* [tiab] OR "irregular settlement" [tiab] OR "informal housing" [tiab] OR favela* [tiab] OR "irregular settlement" [tiab] OR basti* [tiab]
	#3	Search (#1 OR #2)
B. LMIC	#4	Search "Developing Countries"[Mesh]
	#5	Search developing countr*[tiab] OR middle income countr*[tiab] OR low income countr*[tiab] OR LMIC[tiab]
C. Low income economies	#6	Search afghan* [tiab] OR Benin* [tiab] OR Burkin* [tiab] OR Burundi* [tiab] OR Central African Republic* [tiab] OR Chad [tiab] OR chadian [tiab] OR Comoros [tiab] OR Comorian [tiab] OR Congo* [tiab] OR Eritrea* [tiab] OR Ethiopia* [tiab] OR Gambia* [tiab] OR Guinea* [tiab] OR Haiti* [tiab] OR North Korea* [tiab] OR Democratic People's Republic of Korea [tiab] OR Liberia* [tiab] OR Madagascar [tiab] OR Malagasy* [tiab] OR Malawi* [tiab] OR Mali* [tiab] OR Mozambiqu* [tiab] OR Nepal* [tiab] OR Niger* [tiab] OR Rwanda* [tiab] OR Senegal* [tiab] OR Sierra Leon* [tiab] OR Somalia* [tiab] OR South Sudan* [tiab] OR Tanzania* [tiab] OR Togo* [tiab] OR Uganda* [tiab] OR Zimbabw* [tiab]
D. lower middle income economies	#7	Search Angola* [tiab] OR Armenia* [tiab] OR Bangladesh* [tiab] OR Bhutan* [tiab] OR Bolivia* [tiab] OR Cabo Verd* [tiab] OR Cambodia* [tiab] OR Cameroon* [tiab] OR Congo* [tiab] OR Cote d'Ivoir* [tiab] OR Djibout* [tiab] OR Egypt* [tiab] OR Salvador* [tiab] OR Georgia* [tiab] OR Ghana* [tiab] OR Guatemala* [tiab] OR Hondura* [tiab] OR India* [tiab] OR Indonesia* [tiab] OR Jordan* [tiab] OR Kenya* [tiab] OR Kiribati [tiab] OR Kosov* [tiab] OR Kyrgyz* [tiab] OR Laos [tiab] OR laotian [tiab] OR Lesoth* [tiab] OR Mauritania* [tiab] OR Micronesia* [tiab] OR Moldov* [tiab] OR Mongolia* [tiab] OR Morocc* [tiab] OR Myanmar* [tiab] OR burmese [tiab] OR Nicaragua* [tiab] OR Nigeria* [tiab] OR Pakistan* [tiab] OR Papua* [tiab] OR Philippin* [tiab] OR Sao Tome* [tiab] OR Solomon Island* [tiab] OR Sri Lank* [tiab] OR Sudan* [tiab] OR Swazi* [tiab] OR Syria* [tiab] OR Tajik* [tiab] OR Timor* [tiab] OR Tunisia* [tiab] OR Ukrain* [tiab] OR Uzbek* [tiab] OR Vanuatu* [tiab] OR Vietnam* [tiab] OR West Bank [tiab] OR Gaza [tiab] OR palestina* [tiab] OR Yemen* [tiab] OR Zambia* [tiab]
E. upper‐middle‐income economies	#8	Search Albania* [tiab] OR Algeria* [tiab] OR Samoa* [tiab] OR Argentina* [tiab] OR Azerbaijan* [tiab] OR Belarus* [tiab] OR Belize' [tiab] OR Bosnia* [tiab] OR Herzegovina* [tiab] OR Botswana* [tiab] OR Brazil* [tiab] OR Bulgaria* [tiab] OR chinese [tiab] OR China [tiab] OR Colombia* [tiab] OR Costa Rica* [tiab] OR Croatia* [tiab] OR Cuba* [tiab] OR Dominica* [tiab] OR Guinea* [tiab] OR Ecuador* [tiab] OR Fiji* [tiab] OR Gabon* [tiab] OR Grenada* [tiab] OR Guyana* [tiab] OR Iran* [tiab] OR Iraq* [tiab] OR Jamaica* [tiab] OR Kazakh* [tiab] OR Lebanon [tiab] OR lebanese [tiab] OR Libya* [tiab] OR Macedonia* [tiab] OR Malaysia* [tiab] OR Maldiv* [tiab] OR Marshall Island* [tiab] OR Mauriti* [tiab] OR Mexic* [tiab] OR Montenegr* [tiab] OR Namibia* [tiab] OR Nauru* [tiab] OR Panama* [tiab] OR Paraguay* [tiab] OR Peru* [tiab] OR Romania* [tiab] OR Russia* [tiab] OR Samoa* [tiab] OR Serbia* [tiab] OR South Africa* [tiab] OR Lucia* [tiab] OR St Vincent [tiab] OR Grenadin* [tiab] OR Suriname* [tiab] OR Thailand [tiab] OR thai [tiab] OR Tonga* [tiab] OR Turkey [tiab] OR turkish [tiab] OR Turkmen* [tiab] OR Tuvalu* [tiab] OR Venezuela* [tiab]
F. all LMIC terms	#9	Search (#4 OR #5 OR #6 OR #7 OR #8)
	#10	Search (#3 AND #9)
I. children	#11	Search "Infant"[Mesh] OR "Child, Preschool"[Mesh]
	#12	Search child* [tiab] OR infant* [tiab] OR baby [tiab] OR toddler* [tiab] OR babies [tiab] OR preschool* [tiab] OR newborn* [tiab] OR neonat* [tiab]
	#13	Search (#11 OR #12)
	#14	Search (#10 AND #13)
nutrition interventions	#16	Search nutrition intervention* [tiab] OR nutrition program* [tiab] OR nutrition counsel* [tiab] OR nutrition advice* [tiab] OR nutrition educat* [tiab] OR nutritional intervention* [tiab] OR nutritional program* [tiab] OR nutritional counsel* [tiab] OR nutritional advice* [tiab] OR nutritional educat* [tiab] OR diet intervention* [tiab] OR diet program* [tiab] OR diet counsel* [tiab] OR diet advice* [tiab] OR diet educat* [tiab] OR dietary intervention* [tiab] OR dietary program* [tiab] OR dietary counsel* [tiab] OR dietary advice* [tiab] OR dietary educat* [tiab] OR food intervention* [tiab] OR food program* [tiab] OR food counsel* [tiab] OR food advice* [tiab] OR food educat* [tiab] OR feeding intervention* [tiab] OR feeding program* [tiab] OR feeding counsel* [tiab] OR feeding advice* [tiab] OR feeding educat* [tiab]
	#15	Search "Dietary Supplements"[Mesh] OR "Infant Food"[Mesh] OR "Child Nutritional Physiological Phenomena"[Mesh] OR "Maternal Nutritional Physiological Phenomena"[Mesh] OR "Feeding Behavior"[Mesh:NoExp] OR "Food, Fortified"[Mesh]
	#17	Search supplements[tiab] OR supplementation[tiab]
	#18	Search (#16 OR #15 OR #17)
	#19	Search (#14 AND #18)
J. Study designs: RCT, CCT, IST, CBA, historical controlled studies	#20	Search "Controlled Clinical Trial" [Publication Type] OR "Randomized Controlled Trial" [Publication Type] OR "Comparative Study" [Publication Type] OR "Interrupted Time Series Analysis"[Mesh] OR "Controlled Before‐After Studies"[Mesh] OR "Historically Controlled Study"[Mesh]
	#21	Search random*[tiab] OR (controlled[tiab] AND (trial[tiab] OR study[tiab] OR cohort[tiab] OR longitudinal[tiab])) OR cross‐sectional[tiab] OR interrupted time series[tiab] OR "before and after study" [tiab] OR before‐after study [tiab] OR cross‐sequential[tiab] OR control group*[tiab] OR matched control*[tiab] OR matched cohort*[tiab]
	#22	Search (#20 OR #21)
	#23	Search (#19 AND #22)