1	(built environment OR neighborhood) AND (aging OR old* OR elder* OR adult*) AND (physical activity OR walk*) Limits: review and years 2004–2019	61
2	built AND environment AND elderly AND population AND health AND review limit: years 2014–2019	25
3	built AND environment AND elderly AND population limit: years 2014–2019	147
4	(“built environment” OR “neighborhood environment”) AND (walking OR mobility) AND (adult OR aged OR “older adult”) limit: years 2014–2019	512