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- Published online June 30, 2011.
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- *Occupational and Environmental Medicine, Sahlgrenska Academy at the University of Gothenburg Gothenburg Sweden
- #Analytical Science, Pharmaceutical Development AstraZeneca R&D, Mölndal Sweden
- ¶SP Technical Research Institute of Sweden Borås Sweden
- A-C. Almstrand, Occupational and Environmental Medicine at Sahlgrenska Academy, Box 414, SE-405 30 Gothenburg, Sweden, E-mail: ann-charlotte.almstrand{at}amm.gu.se