Turunen, K.
Aaltonen, L.
Kumpumäki, J.
Portegijs, E.
Keikkala, S.
Kinnunen, M.-L.
Finni, T.
Sipilä, S.
Nikander, R.
Funding for this research was provided by:
the Social Insurance Institution of Finland
supported by the (Finnish) Ministry of Social Affairs and Health
the Finnish Association of Physiotherapists.