Answer:
Parathyroidectomy
Explanation:
P A R A T H Y R O I D E C T O M Y (hehe)
All of them could be intentional/unpreventable, we are only talking about an injury so I would say the plane crash.
The use of a drug for non medical reasons
Drugs are usually made to help a person combat diseases, etc, but if it is used for something other then it's intended purpose, or is used to, instead of helping the body but destroying it, it becomes a "drug abuse"
hope this helps
