Reply to Q23 (#4)

> Some efforts... :
We have changed the introductory paragraph to flow better, separated
the actual method that was included (Basgan, cadavias2007), and included
a new method (Nest) that was published after first submission.

> Subject's study..:
I have removed appearances of ``study'' meaning ``image''. I have also
changed some more appearances of study with other meanings.

> [After Fig 1...
The paragraph has been completely re-phrased. The "the advance of image disorder"
has been replace where it appears now.

Close #4