Administration of melatonin during chemotherapy may prevent some chemotherapy-induced side effects, particularly myelosuppression and neuropathy. Oncologists often prescribe drugs (Leukine) that work in a similar way as melatonin to protect the immune system.
Definition: Mortality is incidence of death in a population. It is measured in various ways, often by the probability that a randomly selected individual in a population at some date and location would die in some period of time. Contrast to morbidity. Terms related to Mortality: 1  Morbidity. 2  Reinsurance.  Indemnity.
There is only a small difference. A casualty is when a person dies, or is seriously wounded in an organization (such as an army) and then are no longer a part of that organization because of that death or injury. Then a fatality is a death resulting from the persons job. Here's the definitions: