- Correspondence to Dr Vidar Søyseth, Department of Medicine, Akershus University Hospital, University of Oslo, Sykehusvn 25, Lørenskog 1478, Norway;
- Received July 4, 2012
- Revised August 21, 2012
- Accepted August 22, 2012
- First published September 28, 2012.
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.