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This study has been approved by the Medical Ethics Committee of the Affiliated Hospital of Shaanxi University of Chinese Medicine (Ethics Approval Number: SZFYIEC\u2014YJ\u20142024 [233]). All study participants signed a\u00a0written informed consent form prior to enrolment in the study. The study was conducted in adherence with the ethical standards of the Declaration of Helsinki.","order":1,"name":"Ethics","label":"Ethics Approval.","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Z.\u00a0Ren, T.\u00a0Wang, L.\u00a0Shen, M.\u00a0Zhang, D.\u00a0Han, N.\u00a0Yu and Z.\u00a0Ren declare that they have no competing interests.","order":2,"name":"Ethics","label":"Conflict of interest","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The supplement containing this article is not sponsored by industry.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}}]}}