About: http://webisa.webdatacommons.org/88927776

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	Although tobacco smoking is the major environmental risk factor for COPD, only a minority of smokers develops this condition, and it appears that genetic and other environmental factors are important in determining risk.
http://www.w3.org/ns/prov#wasQuotedFrom	clinicaltrials.gov