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Lähde: Lindberg P, Josephson M, Alfredsson L, Vingård E: Comparisons between five self-administered instruments predicting sick leaves in a 4-year follow-up. Arch Occup Environ Health 2009; 82: 227-234.
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Lähde: Lindberg P, Josephson M, Alfredsson L, Vingård E: Comparisons between five self-administered instruments predicting sick leaves in a 4-year follow-up. Arch Occup Environ Health 2009; 82: 227-234.
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