<http://webisa.webdatacommons.org/372070009>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nih.gov> .
<http://webisa.webdatacommons.org/372070009>	<http://www.w3.org/ns/prov#value>	"Material and MethodsThis study is a case-control study based on national register data from a large number of subjects." .
<http://webisa.webdatacommons.org/372070009>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/371315719>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/372070009> .
<http://webisa.webdatacommons.org/prov/362755317>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/372070009> .