Monetary value of lost productivity over a five year follow up in early rheumatoid arthritis estimated on the basis of official register data on patients’ sickness absence and gross income: experience from the FIN-RACo trial
K Puolakka, H Kautiainen, M Pekurinen, T Möttönen, P Hannonen, M Korpela, M Hakala, M Arkela-Kautiainen, R Luukkainen, M Leirisalo-Repo
Annals of the Rheumatic Diseases Jul 2006, 65 (7) 899-904; DOI: 10.1136/ard.2005.045807