1. Division of Cardiology, Department of Medicine, Solna, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden (A.M., U.R., A.F.,L.D., J.P., M.S.).
2. Department of Clinical Physiology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden (K.L., J.N.).
3. Division of Physiotherapy, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden (M.N.-B.).
4. Division of Respiratory Medicine and Allergy, Department of Medicine, Solna, Karolinska University Hospital, Stockholm, Sweden (M.R.).
5. Division of Infection Diseases, Department of Medicine, Solna, Karlinska University Hospital, Karolinska Institutet, Stockholm, Sweden (J.B.).