1 Emergency & Trauma Intensive Care Unit, Careggi Teaching Hospital, Largo Brambilla 3, 50134 Florence, Italy. Electronic address: stebam@hotmail.it.
2 General Intensive Care Unit, ASST Monza - San Gerardo Hospital, University of Milano-Bicocca, P.O.S. Gerardo Via Pergolesi 33, 20900 Monza, Italy. Electronic address: alberto.lucchini@unimib.it.
3 Intensive Care Unit, Perugia University Hospital, Piazza Menghini, 1, 06129 Perugia, Italy. Electronic address: giustigiando@gmail.com.
4 Emergency & Trauma Intensive Care Unit, Careggi Teaching Hospital, Largo Brambilla 3, 50134 Florence, Italy. Electronic address: christian.caruso1@gmail.com.
5 IMCU - Outpatients, Saint James Hospital, George Borg Olivier Street, Sliema, Malta. Electronic address: mcfelippis@gmail.com.