About: http://webisa.webdatacommons.org/227510443

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	It is estimated that more than 50% of motor neurons are lost before symptoms such as muscle weakness become apparent.
http://www.w3.org/ns/prov#wasQuotedFrom	jamanetwork.com