Affiliation: | aSahlgrenska University Hospital, Göteborg, Sweden bLund University Hospital, Lund, Sweden cUmeå University Hospital, Umeå, Sweden dKarolinska University Hospital at Solna, Stockholm, Sweden eKarolinska University Hospital at Huddinge, Stockholm, Sweden fMalmö University Hospital, Malmö, Sweden gÖrebro University Hospital, Örebro, Sweden hKarlstad Central Hospital, Karlstad, Sweden |