1 Anesthesia and Intensive Care Unit, Bufalini Hospital - AUSL della Romagna, Cesena, Italy; Department of Biomedical, Metabolic and Neural Sciences, University of Modena & Reggio Emilia, Modena, Italy. Electronic address: marta.antonini@auslromagna.it.
2 Anesthesia and Intensive Care Unit, Bufalini Hospital - AUSL della Romagna, Cesena, Italy.
3 Cardiology Unit, Morgagni-Pierantoni Hospital - AUSL della Romagna, Forlì, Italy.
4 Obstetrics and Gynecology Unit, Bufalini Hospital - AUSL della Romagna, Cesena, Italy.