1. Clinical Exercise Physiology & Rehabilitation Research Laboratory, Physiotherapy Department, School of Health Sciences, University of Thessaly, Volos, Greece
2. First Department of Critical Care Medicine and Pulmonary Services, Evangelismos Hospital, Athens, Greece
3. Health Assessment and Quality of Life Research Laboratory, Physiotherapy Department, School of Health Sciences, University of Thessaly, Volos, Greece
4. Pulmonary & Respiratory Failure Department, First ICU, Evangelismos Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece