Acknowledgements
Our sincere thanks to all subjects participating in the trial. Thanks to the unblinded staff at the hyperbaric unit, Carola Lernbäck, Birgitta Johansson, Johan Ohlberger, Annelie Kruthammar, Lovisa Liwenborg and Georgios Sidiras for managing the subjects. Thanks to the research nurses at KFE, Anna Schening, Anna Granström, Ola Friman and Pia Zetterqvist. Thanks to physiotherapists Ulrika Holdar and Anna Svensson-Raskh. Thanks to the head of ME Intensivvård Björn Persson for supporting the trial.