1 University of Udine School of Medicine, Udine, Italy. Electronic address: [email protected].
2 Department of Otolaryngology, Hospital Universitario Central de Asturias, Oviedo, Spain.
3 Department of Otolaryngology, Hospital Universitario Central de Asturias, Oviedo, Spain; Instituto Universitario de Oncología del Principado de Asturias, Oviedo, Spain.
4 Pathology Department, Liverpool Clinical Laboratories and Oral & Maxillofacial Pathology, School of Dentistry, University of Liverpool, Liverpool, UK.
5 Department of Pathology, Allegiance Health, Jackson, MI.
6 Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR.
7 Department of Pathology, Toronto General Hospital, University Health Network, Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.
8 Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands.
9 Department of Pathology, MD Anderson Cancer Center, Houston, TX.
10 Department of Pathology, The Johns Hopkins Medical Institutions, Baltimore, MD; Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Medical Institutions, Baltimore, MD.
11 University of Udine School of Medicine, Udine, Italy.