Just to let you know Ian Wilkes has helped me out and I no longer need the article from Springer. Regards Lynne Nurcombe Knowledge Manager Knowledge Services Derbyshire County Primary Care Trust Babington Hospital Derby Road Belper DE56 1WH Tel. 01773 525059 Fax. 01773 525006 DISCLAIMER - This email and any file transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Any views or opinions expressed are those of the author and do not represent the views of Derbyshire County PCT, unless otherwise explicitly stated. The information contained in this email may be subject to public disclosure under the Freedom of Information Act 2000. Unless the information is legally exempt from disclosure, the confidentiality of this email cannot be guaranteed. Derbyshire County PCT is an NHS Organisation.