作者单位:Cytopathology Unit, Azienda Ospedaliero-Universitaria Ospedali Riuniti, Ancona, Italy[1]Pulmonary Diseases Unit, Department of Clinical and Molecular Biomedicine, University of Catania[2]Pulmonary Diseases Unit, Department of Immunoallergic and Respiratory Diseases, Azienda Ospedaliero[3]Neuroepidemiology Operating Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy[4]