1. Clinical Ergophysiology and Exercise Physiology Laboratory, Department of
Physical Education and Sport Science, Democritus University of Thrace,
Panepistimioupoli, 69100 Komotini, Greece
2. 1st Critical Care Department, Evangelismos General Hospital, Department of
Medicine, National and Kapodistrian University of Athens, 45-47 Ypsilantou Str., 106 75
Athens, Greece