Archived at the Flinders Academic Commons: http://dspace.flinders.edu.au/dspace/ This is the publisher’s copyrighted version of this article. The original can be found at: http://www.racgp.org.au/afp/200811/200811thistlewaite.pdf © 2008 Australian Family Physician www.afp.org.au Copyright to Australian Family Physician. Reproduced with permission. Permission to reproduce must be sought from the publisher, The Royal Australian College of General Practitioners.