Ethical approval
Approval was obtained from the Danish Data Protection Agency (case no. 1-16-02-105-19). The CROSS-TRACKS case no. was 008-2. Approval by the Central Denmark Region Ethical Committee was not required. Patients in the intervention group could withdraw their consent at any time. The intervention did not harm any patients. All procedures in this study were performed in accordance with the 1964 Declaration of Helsinki and its later amendments.