PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Postnatal smoking by either the mother or other household members also has been shown to be a risk factor for SIDS. Many studies have found a positive relationship between postnatal smoking and SIDS, even after controlling for other risk factors such as maternal characteristics, prenatal smoking, and, in some studies, sleep position.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nber.org