1 Department of Medical Sciences and Infective Diseases, Unit of Respiratory Diseases, IRCCS Policlinico San Matteo Foundation and University of Pavia Medical School, Pavia, Italy.
2 Analog and Power FMT and Smart Power Technology, ST Microelectronics, Agrate Brianza, Italy.
3 Department of Intensive Medicine, Unit of Radiology, IRCCS Policlinico San Matteo Foundation and University of Pavia Medical School, Pavia, Italy.