1. Psychiatry Aalborg University Hospital AalborgDenmark
2. Department of Clinical Medicine Aalborg University Aalborg Denmark
3. South London and Maudsley NHS Foundation Trust LondonUK
4. Institute of Psychiatry, Psychology and Neuroscience King's College London London UK
5. Department of Cardiology Aalborg University Hospital AalborgDenmark
6. National Centre for Register‐Based Research University of Aarhus Aarhus Denmark