https://www.selleckchem.com/ Further research is warranted to better understand the factors that lead to frequent use and to develop effective strategies to address the complex health needs of MUs. MU burden the already increasing patient volume of ED. However, they represent a heterogeneous group of patients, among whom people with a migration background are not common. Further research is warranted to better understand the factors that lead to frequent use and to develop effective strategies to address the complex health needs of MUs. Insomnia is awidespread disease in adults and has ahigh prevalence rate. As sleep disturbances are arisk factor concerning mental and physical health, prevention and early intervention are necessary. Thus, the aim of this study was to implement aself-learning prevention and early intervention training for university staff members. We adapted an established cognitive behavioral therapy for insomnia (CBT-I) intervention as an online version for use during the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) crisis. Development and adaptation procedure of the internet-based CBT‑I (iCBT-I) prevention and early intervention training is described. Sessions and topics are shown in detail. The Online Sleep Prevention and Treatment Acceptance questionnaire (OSTA) and the Online Sleep Prevention and Treatment Feedback questionnaire (OSTF) were used to assess acceptance. Sleep problems of university staff members were assessed using the Pittsburgh Sleep Questionnaire (PSQI). The online-adapted version r samples and more sleep-related assessment strategies, e.g., actigraphy and sleep log, are necessary. This is the first iCBT‑I prevention and early intervention training for university staff members. The training by participants was very well accepted and they scored the videos as very helpful. Sleep problems decreased after online training. However, further studies with larger samples and more sleep-related assessment strategies, e.g