1. Institute of Electronics and Informatics Engineering of Aveiro (IEETA), University of Aveiro, Aveiro, Portugal;
2. Department of Education and Psychology, University of Aveiro, Aveiro, Portugal;
3. Department of Mathematics, University of Aveiro, Aveiro, Portugal;
4. Centre of Research and Development in Mathematics and Applications, University of Aveiro, Aveiro, Portugal;
5. Department of Economics, Management, Industrial Engineering and Tourism, University of Aveiro, Aveiro, Portugal;
6. Department of Clinical Speech and Language Studies, Trinity College, The University of Dublin, Dublin, Ireland;
7. School of Health Sciences (ESSUA), University of Aveiro, Aveiro, Portugal