Svebak, Sven, and Hallgeir Halvari. “Sickness Absence Due to Chronic Musculoskeletal Pain: The Exploration of a Predictive Psychological Model Including Negative Moods, Subjective Health and Work Efficacy in an Adult County Population (The HUNT Study)”. Europe’s Journal of Psychology 14, no. 2 (June 19, 2018): 373-385. Accessed April 25, 2024. https://ejop.psychopen.eu/index.php/ejop/article/view/1470.