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Hong Gee Roh, Jin Tae Kwak, In Seong Kim, and Hyun Jeong Kim are founders of DeepClue Inc. Hee Jong Ki is a director at DeepClue Inc. Sumin Jung and Hyun Yang are employees at DeepClue Inc.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}},{"value":"All methods were carried out in accordance with relevant guidelines and regulations of the Declaration of Helsinki and the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guidelines for reporting observational study. This is a retrospective study based on a prospectively collected database involving human participants and their data, approved by the local institutional review boards of Konkuk University Medical Center (KUMC0114-01\u2013100-007) and Daejeon St. Mary\u2019s Hospital (DC16OIMI0043).","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Written informed consent was obtained from all patients.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to participate"}},{"value":"The authors affirm that human research participants provided informed consent for publication of the images in Figs.\u00a0\n                      \n                      \u2013\n                      \n                      .","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to publish"}}]}}