1. Department of OtorhinolaryngologyCentro Hospitalar de Trás‐os‐Montes e Alto Douro Vila Real Portugal
2. Department of PathologyFaculty of Medicine of the University of Porto Porto Portugal
3. IPATIMUP – Institute of Molecular Pathology and Immunology of the University of Porto Porto Portugal
4. i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto Porto Portugal