User talk:2600:1700:B530:5090:E9F6:42E2:F15:DB3F

"heart attack"
"Stewart died of a heart attack caused by the embolism at the age of 89,[354]"

As a doctor, this sentence seems implausible. Heart attacks are caused by coronary artery disease. Pulmonary emboli don't cause coronary artery disease. They can cause cardiac arrest and subsequent death if the pulmonary embolus is large enough.