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All stages of the study were carried out according to Springer rules and were approved by the Ethics Committee of the National Nizhny Novgorod State University (Study of the effect of L-carnitine on the bioelectrical activity of the myocardium by the method of microelectrode mapping using algorithms based on artificial intelligence dated 02.02.2024 under number 79).","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics Approval"}},{"value":"The authors declare that they have no conflict of interest.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}}]}}