Tuuli Lahti*, Taina Methuen, Risto Roine, Kaija-Liisa Seppä, David Sinclair, Markku Partinen and Hannu Alho
* Corresponding author: Tuuli Lahti tuuli.lahti@thl.fi
BMC Research Notes 2011, 4:108 doi:10.1186/1756-0500-4-108