Only 58 percent of the hysterectomies were performed for appropriate reasons, the study found.
Ganglionectomies are also performed for other reasons, such as the treatment of chronic pain.
The band made the news in 2006 when they refused to perform to troops in Iraq for political reasons.
Had he been unable to perform for medical reasons, most of his salary would have been covered by an insurance policy.
He said he would not perform them for frivolous reasons.
In 1949 the law was amended to allow abortions to be performed for economic reasons.
It is performed less commonly on livestock, as a method of birth control or for other reasons.
Caesarean sections are in some cases performed for reasons other than medical necessity.
Circumcisions that are performed for religious reasons may be done by others trained in the procedure.
Gardening may be performed at a professional level, a hobby, or for therapeutic reasons.