Assertion: polycythemia's cause | /r/HasProperty | long-term exposure
Facets:
value: to heart
type: TRANSITIVE-OBJECT
value: to chronic lung
type: TRANSITIVE-OBJECT
value: to high altitude
type: OTHER
value: to disease
type: TRANSITIVE-OBJECT
Source sentences:
text: Causes of acquired erythrocytosis include long-term exposure to high altitude, chronic lung or heart disease, episodes in which breathing slows or stops for short periods during sleep (sleep apnea), and certain types of tumors.