About: http://webisa.webdatacommons.org/314458343

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	Unfortunately, there is a tradeoff between precision and expense, with the most precise measurement methods being too expensive to use in large epidemiological studies.
http://www.w3.org/ns/prov#wasQuotedFrom	ubc.ca