1. Oslo University Hospital, Oslo, Norway and University of Oslo Oslo Norway
2. Oslo University Hospital Oslo Norway
3. Norwegian University of Science and Technology, Trondheim, Norway and Clinic of Cardiology, St. Olav's Hospital, Trondheim, Norway, and Levanger Hospital, Nord‐Trøndelag Hospital Trust Levanger Norway
4. Norwegian University of Science and Technology, Trondheim, Norway and Clinic of Cardiology, St. Olav's Hospital Trondheim Norway