Health-related quality of life before and during the COVID-19 pandemic in Switzerland: a cross-sectional study.

"Declarations Conflict of interestThe authors have no conflict of interest for this study. Ethical approvalThe anonymous and voluntary online survey of the CoWELL project did not require ethical approval according to Swiss legislation. For the collection of HRQOL data in the Swiss general population, we received ethical approval from the Ethics Committee of Northwest and Central Switzerland (EKNZ 2015-075; 26 March 2015). Both surveys were conducted in line with the ethical principles of the WMA Declaration of Helsinki. Consent to participateCoWELL project: Participants consented by reading the study information and completing the anonymous voluntary online questionnaire. Swiss general population: Written informed consent was obtained from all individual participants included in the study. Conflict of interest The authors have no conflict of interest for this study."

"Funding Open access funding provided by University of Luzern. The CoWELL project received funding from the Research Commission of the University of Lucerne (Grant No. 20-064-GM). VRM and JB are supported by an Early Postdoc Mobility fellowship (P2BEP3_191798 and P2LUP1_195091) of the Swiss National Science Foundation (SNSF). The SNSF funded the collection of HRQOL data in the Swiss general population (Grant No. 100019_153268)."