Assertion: heart failure's cause | /r/HasProperty | valvular heart disease
Facets:
value: in tropical countries
type: LOCATION
Source sentences:
text: In tropical countries, the most common cause of HF is valvular heart disease or some type of cardiomyopathy.
text: If the cause is valvular heart disease (most typically, mitral stenosis), surgical repair or replacement of the diseased valve is necessary.