- Dr Sigurjon B Stefansson, Tryggingastofnun rikisins, (The State Social Security Institute), Laugavegur 114, 150 Reykjavik, Iceland. Telephone 00354 560 4420; fax 00354 562 4146.
- Received April 15, 1997
- Revised August 8, 1997
- Accepted August 12, 1997
- First published February 1, 1998.
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.