Sandberg Kristin Ingstad, Andresen Steinar, Steen Sissel Hodne, Møgedal Sigrun, Onarheim Kristine Husøy, Van den Bergh Graziella
Institute of Health and Society/Centre for Development and the Environment, University of Oslo, Norway.
Tidsskr Nor Laegeforen. 2011 Sep 20;131(18):1784-6. doi: 10.4045/tidsskr.11.0747.