title: Long-Term Work Productivity Costs Among Subjects With Early Rheumatoid Arthritis - A Nationwide Analysis Based on 7,831 Subjects' Sickness Absence Days and Income.
authors.affiliation: University of Eastern Finland, Kuopio, Finland.
authors.forename: J A
authors.initials: JA
authors.lastname: Martikainen
authors.affiliation: Erasmus University, Rotterdam, The Netherlands.
authors.forename: M
authors.initials: M
authors.lastname: Krol
authors.affiliation: Tampere University Hospital, Tampere, Finland.
authors.forename: V
authors.initials: V
authors.lastname: Rantalaiho
authors.affiliation: Helsinki University Central Hospital, Helsinki, Finland.
authors.forename: H
authors.initials: H
authors.lastname: Kautiainen
authors.affiliation: Lappeenranta Central Hospital, Lappeenranta, Finland.
authors.forename: K
authors.initials: K
authors.lastname: Puolakka