Ethical issues
The researcher was unaware of the clinical conduct promoted by the patients participating in the study and coming from the cardiology outpatient clinic, thus guaranteeing the optimal treatment for HF in the 2 groups. This study was approved by the Ethical Committee under opinion 4,486,173 on 12/29/2020 following resolution 466/2012 and registered at ReBEC (Brazilian Registry of Clinical Trials), UTN: U111112552081, and at Plataforma Brasil: 38606820.6.0000.5243.