Anne Kristin MFell, HildeNotø, MaritSkogstad, Karl-ChristianNordby, WijnandEduard, Martin VeelSvendsen, ReidunØvstebø, Anne Marie SiebkeTrøseid, JohnyKongerud
Occupational and Environmental Medicine Nov 2011, 68 (11) 799-805; DOI: 10.1136/oem.2010.057729