About: http://webisa.webdatacommons.org/204296177

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 strengths and limitations of the different designs need careful consideration, including issues of confounding by indication, recall bias, and power.
http://www.w3.org/ns/prov#wasQuotedFrom	worldwidescience.org