Affiliation of all Authors :
  1. University of Bologna, Department of Medicine and Surgery Sciences, Via Massarenti n. 9, 40138, Bologna, Italy
  2. Azienda Ospedaliera-Universitaria di Bologna Policlinico S. Orsola-Malpighi, Anesthesia and Pain Therapy Unit, Via Massarenti n. 9, 40138, Bologna, Italy
  3. University of Bologna, Post Graduate School of Anaesthesia and Intensive Care, Via Massarenti n. 9, 40138, Bologna, Italy