Sari Kehusmaa*, Ilona Autti-Rämö, Hans Helenius, Katariina Hinkka, Maria Valaste and Pekka Rissanen
* Corresponding author: Sari Kehusmaa sari.kehusmaa@kela.fi
BMC Health Services Research 2012, 12:204 doi:10.1186/1472-6963-12-204