Ewa Grodzinsky, Claes Hallert, Tomas Faresjö, Elisabet Bergfors and Åshild O Faresjö*
* Corresponding author: Åshild O Faresjö ashild.olsen.faresjo@liu.se
International Journal of Health Geographics 2012, 11:5 doi:10.1186/1476-072X-11-5