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Ministry of Health, Labour and Welfare. Overview of the National Survey of Living Conditions 2022. Tokyo: Ministry of Health, Labour and Welfare; 2023. [in Japanese]. https:\/\/www.mhlw.go.jp\/toukei\/saikin\/hw\/k-tyosa\/k-tyosa22\/dl\/14.pdf. Accessed 22 July 2025."},{"key":"2","doi-asserted-by":"crossref","unstructured":"2. Forootan M, Bagheri N, Darvishi M. Chronic constipation: A review of literature. Medicine (Baltimore). 2018;97:e10631. https:\/\/doi.org\/10.1097\/MD.0000000000010631.","DOI":"10.1097\/MD.0000000000010631"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3. Ihara E, Manabe N, Ohkubo H, Ogasawara N, Ogino H, Kakimoto K, et al. Evidence-Based Clinical Practice Guidelines for Chronic Constipation 2023. Digestion. 2025;106:62\u201389. https:\/\/doi.org\/10.1159\/000540912.","DOI":"10.1159\/000540912"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4. Belsey J, Greenfield S, Candy D, Geraint M. 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