Confidentiality {27}
Participants will be allocated an individual ID number after providing written informed consent. This allocation will be kept secure in a password-protected and access-restricted identification log file. Copies of written informed consent forms will be stored separately from study records in restricted area. All other documents, files, labels, and specimens will only contain participants’ ID numbers and are therefore pseudonymized. During the trial period in the sleep laboratory, participants will wear their individual ID number visible on clothing.Suspension of confidentiality can only be initiated with written permission of the participant or for the purpose of monitoring and audits by entitled authorities.