About: http://webisa.webdatacommons.org/15622395

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The setting was an area with good regional ambient air quality to minimize confounding.
http://www.w3.org/ns/prov#wasQuotedFrom	aap.org