作者: J. G. Davidsen , A. H. Rikardsen , E. Halttunen , E. B. Thorstad , F. Ãkland
DOI: 10.1111/J.1095-8649.2009.02423.X
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摘要: This is the accepted version (authors' final draft post review) of paper, reprinted with permission. Published available at http://dx.doi.org/10.1111/j.1095-8649.2009.02423.x