- Dr P M van Grunsven, Department of General Practice, University of Nijmegen, P O Box 9101, 6500 HB Nijmegen, The Netherlands.
- Received November 25, 1997
- Revision requested January 21, 1998
- Revised April 27, 1998
- Accepted May 15, 1998
- First published January 1, 1999.
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.