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Bjorngaard, J. H., Gunnell, D., Elvestad, M. B., Davey Smith, G., Skorpen, F., Krokan, H., et al. (2013). The causal role of smoking in anxiety and depression: a Mendelian randomization analysis of the HUNT study. Psychol Med, 43(4), 711–719.
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Grav, S., Stordal, E., Romild, U. K., & Hellzen, O. (2012). The relationship among neuroticism, extraversion, and depression in the HUNT Study: in relation to age and gender. Issues Ment Health Nurs, 33(11), 777–785.
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Sivertsen, B., Salo, P., Mykletun, A., Hysing, M., Pallesen, S., Krokstad, S., et al. (2012). The bidirectional association between depression and insomnia: the HUNT study. Psychosom Med, 74(7), 758–765.
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