- Correspondence to Dr Virginia A Aita, Associate Professor, College of Public Health, The University of Nebraska Medical Center, 986075 Nebraska Medical Center, Omaha, Nebraska, 68198-6075, USA;
- Accepted 13 April 2010
- Published in print 1 June 2010.
- Published online 21 June 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.