1. Royal Institute of Technology, School of Technology and Health, Stockholm, Sweden;
2. Karolinska Institutet, Södersjukhuset, Stockholm, Sweden;
3. Karolinska Institutet, Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden;
4. Department of Clinical Science, Intervention and Technology, Division of Pediatrics, Karolinska Institutet, Stockholm, Sweden; and
5. Karolinska Institutet, Department of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden