About: http://webisa.webdatacommons.org/176976753

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	In addition, we analyzed observational data from a clinical database, and thus misclassification of exposure (particularly, start and end dates of pregnancies), outcome, and other factors cannot be ruled out.
http://www.w3.org/ns/prov#wasQuotedFrom	pubmedcentralcanada.ca