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Qingdao Municipal Hospital\u2019s Ethics Committee approved this study (PNDABLE: ChiCTR2000033439, registration date: 01\/06\/2020). The patients\/participants gave their written informed consent to participate in this study.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"375"}}