- Correspondence to Professor Sverre Mæhlum, Hjelp24 NIMI AS, Postboks 4903 Nydalen, 0423 Oslo, Norway;
- Accepted March 22, 2010
- First published May 10, 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.