1 Department of Anesthesia and Intensive Care, Skåne University Hospital, Lund S-22185, Sweden; Department of Anesthesia and Intensive Care, Institution of Clinical Sciences, Medical Faculty, Lund University, Lund, Sweden. Electronic address: ulf.schott@skane.se.
2 Department of Anesthesia and Intensive Care, Skåne University Hospital, Lund S-22185, Sweden; Department of Anesthesia and Intensive Care, Institution of Clinical Sciences, Medical Faculty, Lund University, Lund, Sweden.