About: http://webisa.webdatacommons.org/85506195

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 majority of deaths attributed to heroin overdose involve significant levels of other drugs such as alcohol or benzodiazepines; opiate levels appear to be similar in both fatal and nonfatal overdoses (Darke and Zador 1996).
http://www.w3.org/ns/prov#wasQuotedFrom	nih.gov