Plans to promote participant retention and complete follow-up {18b}
During admission at Rigshospitalet, all eligible and included patients will undergo a CMR examination and will be informed about the 3 months follow-up CMR. The co-primary investigator (JMM) will be responsible for the planning of the follow-up scan. All patients who complete the follow-up scan will also have blood drawn for the research biobank. All patients will be called by telephone at least five times, and patients will be offered transportation renumeration to undertake the CMR scan at 3 months if needed. If the investigator is not able to reach the patient or the patient is unwilling to have the follow-up scan done, the patient will remain in the trial database and followed for all other study parameters.