1. Department of Clinical Physiology; Kalmar County Hospital; Kalmar Sweden
2. Department of Medicine and Health Sciences; University Hospital Linköping; Linköping Sweden
3. Department of Molecular Medicine and Surgery; Section of Clinical Physiology; Karolinska Institutet; Stockholm Sweden
4. Department of Clinical Physiology; Karolinska University Hospital; Solna Sweden
5. Department of Clinical Physiology; Skåne University Hospital; Lund Sweden