1 Pulmonology Unit, Department of Biomedical and Dental Sciences, Morphological and Functional Images (BIOMORF), University of Messina, Messina, Italy.
2 Department of Neurosciences, Nemo Sud Clinical Center for Neuromuscular Disorders, Messina, Italy.
3 Department of Intensive Care and Noninvasive Vnetilatory Unit, Intensive Care Unit, Hospital Morales Meseguer Murcia, Murcia, Spain.