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All patients admitted at our center had consented to the anonymous use of their medical data for scientific research, publication and\/or quality assessment, and informed consents were previously signed at the beginning of their treatments. And because the study was designed to retrospectively analyze the data of patients who had finished their treatments, further consent was not necessary.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"The authors declare that they have no conflict of interest.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}}]}}