1Bioengineering Department, Universidad Carlos III de Madrid, Leganés, Madrid, Spain
2Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
3Computer Science and Engineering Department, Universidad Carlos III de Madrid, Madrid, Spain
4Sociedad Española de Electromedicina y Calidad S.A. (SEDECAL), Madrid, Spain
5Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
6Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
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