1 Stroke Unit, Department of Emergency-Urgency and Transplants, Azienda Ospedaliera Universitaria Senese, "Santa Maria alle Scotte" General-Hospital, Siena, Italy.
2 Department of Medical Sciences, Surgery and Neurosciences, University of Siena, Siena, Italy.
3 Institute of Cardiovascular Sciences, Shanghai Engineering Research Center of Organ Repair, School of Life Science, Shanghai University, Shanghai, China.