The files associated with this article that are to be downloaded to Apple/Mac computers no longer work with the newer operating systems.
Unfortunately the journal is unable to update the files on its system.
If you wish to put the interpretation program on an Apple product, the updated files and instructions are at:
http://www.xint.org
Please go to that website or follow this link: XINT
Updated Files for Apple/Mac Users
21 October 2013
The files associated with this article that are to be downloaded to Apple/Mac computers no longer work with the newer operating systems.
Unfortunately the journal is unable to update the files on its system.
If you wish to put the interpretation program on an Apple product, the updated files and instructions are at:
http://www.xint.org
Please go to that website or follow this link: XINT
Competing interests
None declared