About: http://webisa.webdatacommons.org/187744753

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	jrobertson20 Jul 22, 2010 It depends on your doctor but most only do one at 20 weeks unless there is a problem.
http://www.w3.org/ns/prov#wasQuotedFrom	medhelp.org