ABSTRACT
When I use a word it means just what I choose it to mean – neither more nor less.
Humpty Dumpty, from Lewis Carroll
General reviews indicating the importance of this topic to diving medicine have been presented by diving clinicians such as Sir Stanley Miles, Kenneth Donald, Carl Edmonds, Barbara Tabeling, Christopher Dueker, Tom Neuman and others (see the Further Reading list at the end of this chapter and also Chapters 24 and 25).
