About: http://webisa.webdatacommons.org/440377555

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 variety of symptoms any one patient may experience during a heart attack is a challenge to the physician who is trying to distinguish between patients who are having a heart attack and those who are not.
http://www.w3.org/ns/prov#wasQuotedFrom	medicalxpress.com