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This study was performed in accordance with the approved guidelines of Seoul St. Mary\u2019s Hospital\u2019s institutional review board approved on 10 November 2020 (KC20RASI0867). Since these were the retrospective studies, the ethics committee of the hospital waived the requirement for obtaining informed consents from patients.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}