@ARTICLE{
author={Sokka Tuulikki,Hakkinen Arja,Kautiainen Hannu,Maillefert Jean Francis,Toloza Sergio,Hansen Troels Mork,Calvo-Alen Jaime,Oding Rolf,Liveborn Margareth,Huisman Margriet,Alten Rieke,Pohl Christof,Cutolo Maurizio,Immonen Kai,Woolf Anthony,Murphy Eithne,Sheehy Claire,Quirke Edel,Celik Selda,Yazici Yusuf,Tlustochowicz Witold,Kapolka Danuta,Skakic Vlado,Roikovich Bernadette,Muller Raili,Stropuviene Sigita,Andersone Daina,Drosos Alexandros A,Lazovskis Juris,Pincus Theodore},
year={2008},
title={Physical inactivity in patients with rheumatoid arthritis: Data from twenty-one countries in a cross-sectional, international study},
journal={ARTHRITIS & RHEUMATISM-ARTHRITIS CARE & RESEARCH},
volume={59},
number={1},
pages={42-50},
document_type={Article},
} 

@ARTICLE{
author={Sokka Tuulikki,Kautiainen Hannu,Toloza Sergio,Luukkainen Reijo K,Horslev-Petersen Kim,Ornbjerg L,Morelli Alessia,Calvo-Alen Jaime,Bresnihan Barry,Maillefert Jean Francis,Gogus Feride,Skakic Vlado,Alten Rieke,Yazici Yusuf,Pincus Theodore},
year={2006},
title={Joint pain may be missed in physician assessment of tender joint count},
journal={ANNALS OF THE RHEUMATIC DISEASES},
volume={65},
number={},
pages={489-489},
document_type={Meeting Abstract},
}