From the *Department of Public Health Science and General Practice, University of Oulu, Unit of General Practice, Oulu University Hospital, Oulu, Finland, †Department of Physiotherapy and Rehabilitation, Oulu Health Centre, Oulu, Finland, ‡Department of Physical Medicine and Rehabilitation, Central Hospital of Seinäjoki, Finland, §Kempele Health Centre, Kempele, Finland, and ∥Leeds General Infirmary, Musculoskeletal Service, Leeds, England.
Supported by a grant from Juho Vainio Foundation, Helsinki, Finland.
Acknowledgment date: May 17, 2002. First revision date: January 2, 2003. Second revision date: May 29, 2003. Acceptance date: September 22, 2003.
The manuscript submitted does not contain information about medical device(s)/drug(s).
Foundation funds were received in support of this work. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.
Address correspondence and reprint requests to Sari Siivola, MD, MSc, Department of Public Health Science and General Practice, University of Oulu, Aapistie 1, Oulu 90220, Finland; E-mail: [email protected]
