Palner, John, and Maurice B. Mittelmark. “Differences Between Married and Unmarried Men and Women in the Relationship Between Perceived Physical Health and Perceived Mental Health”. Norsk Epidemiologi 12, no. 1 (November 5, 2009). Accessed May 6, 2024. https://www.ntnu.no/ojs/index.php/norepid/article/view/507.