1 Department of Anesthesia and Intensive Care 1 - Unit of Obstetric Anesthesia, IRCCS Policlinic San Matteo Hospital Foundation, Pavia, Italy. Electronic address: [email protected].
2 Department of Anesthesia and Intensive Care 1 - Unit of Obstetric Anesthesia, IRCCS Policlinic San Matteo Hospital Foundation, Pavia, Italy.
3 Clinical Epidemiology and Biostatistics, Scientific Direction, IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano Foundation, Milano, Italy.
4 Department of Anesthesia and Intensive Care - AUSL Piacenza.