Answer:
bone marrow transplant, blood transfusion, chemotherapy
Explanation:
its correct on edge
Answer:
A. Cohort study
Explanation:
It is basically a cohort study because in this we can evaluate the incident rate at a particular time for a particular disease. .
Answer:
Aheart attack is a build up of cholestorol that prevents the blood from flowing through the body which leads to cardiac arrest.
Explanation: