About: http://webisa.webdatacommons.org/406786598

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 precordial leads, V1 to V6, are also unipolar leads but instead of recording between limbs they are placed directly on the chest so the sensing electrode is sensing the heart from a very close and particular angle.
http://www.w3.org/ns/prov#wasQuotedFrom	emergsource.com