1 Clinica Montevergine, GVM Care & Research, Mercogliano, Italy; Heart and Lung Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland. Electronic address: faustobiancari@yahoo.it.
2 Heart and Lung Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland; Research Unit of Surgery, Anesthesia and Critical Care, University of Oulu, Oulu, Finland.
3 Anthea Hospital, GVM Care & Research, Bari, Italy.