Eero Pukkala, Prof., Jan Ivar Martinsen, Elsebeth Lynge, Holmfridur Kolbrun Gunnarsdottir, Pär Sparén, Laufey Tryggvadottir, Elisabete Weiderpass, and Kristina Kjaerheim. “Occupation and Cancer – Follow-up of 15 Million People in Five Nordic Countries”. Acta Oncologica 48, no. 5 (January 1, 2009): 646–790. Accessed April 22, 2026. https://medicaljournalssweden.se/actaoncologica/article/view/25514.