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<http://webisa.webdatacommons.org/prov/135148349>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/192848342> .
<http://webisa.webdatacommons.org/192848342>	<http://www.w3.org/ns/prov#value>	"This procedure is a common method used in the first 5 to 12 weeks (first trimester) of pregnancy." .
<http://webisa.webdatacommons.org/192848342>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<americanthinker.com> .