Assertion: lassa fever | /r/HasProperty | conducted in sierra leone
Facets:
value: between 1977
type: TEMPORAL
value: between 1991
type: TEMPORAL
Source sentences:
text: The document is a report of a meta-analysis of data from U.S. Centers for Disease Control and Sierra Leone Ministry of Health studies of the treatment of Lassa fever conducted in Sierra Leone between 1977 and 1991.