About: http://webisa.webdatacommons.org/13626442

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	This article says: Currently affecting about 15 to 20 million Americans, osteoarthritis is the most common joint disorder and is expected to increase by 50 percent over the next two decades with the aging of the population.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org