Ethics approval and consent to participate
This study complies with the principles of good clinical practice. The study is in accordance with the Declaration of Helsinki and has been approved by the local ethics committee. The observation study received a declaration of no objection by the Ethics Committee northwest/central Switzerland (EKNZ UBE-16/003) and patients who denied retrospective use of their data were excluded. We received a waiver from ethics committee that the consent was not necessary in this quality improvement project (EKNZ UBE-16/003). The qualitative project holds a declaration of no objection by the Ethics Committee northwest/central Switzerland (EKNZ UBE-16/003) for the focus group interviews. Participants gave their informed consent before participating in the study in written form.