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Shinya Tsuzuki and June Young Chun were not involved in the selection of peer reviewers for the manuscript nor any of the subsequent editorial decisions. Yunseop Shin and Yongdai Kim declare no conflicts of interest.","order":1,"name":"Ethics","label":"Conflicts of Interest","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"This study was approved by the Certified Review Board of Japan Institute for Health Security (JIHS-S-004400-03) and the National Cancer Center, South Korea (NCC2025-0061). The Certified Review Board has approved our research plan to conduct surveys in four countries: Japan, South Korea, Thailand, and Vietnam. Informed consent was obtained by each participant through an electronic form before starting the survey, and the ethical review board approved this form of consent.","order":2,"name":"Ethics","label":"Ethical Approval","group":{"name":"EthicsHeading","label":"Declarations"}}]}}