- Correspondence to Dr Scott Cunningham, One Bear Place #98003, Baylor University, Waco, Texas 76798-8003, USA;
- Accepted 10 August 2010
- Published in print 1 December 2010.
- Published online 22 November 2010.
- Published first 18 September 2010.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.