2.9. Ethical Considerations
Ethical approval was obtained from the Swedish Ethical Review Authority Stockholm Ethical Committee, Sweden (No. 2015/834-31, 2016/2203-32, 2019-01444, 2020-03822). Enrollment in the pilot trial was based on written and oral informed consent obtained at several time points, as the data were collected over time (2019–2020). The assessors were registered health professionals and researchers, with experience in both clinical practice and research. If study participants exhibited unexpected symptoms, they were referred to relevant professionals in primary healthcare. The trial was conducted according to Quality Assurance of Clinical Research, which all investigators had completed training in prior to the start of the trial.