Bøkenes Lise, Mercer James B, MacEvilly Sheila, Andrews James F, Bolle Roald
Department of Medical Physiology, Institute of Medical Biology, Faculty of Medicine, University of Tromsø, N-9037, Tromsø Norway.
Eur J Public Health. 2011 Aug;21(4):526-31. doi: 10.1093/eurpub/ckp109. Epub 2009 Aug 18.