Document is current

Article History

Received: 31 December 2022

Accepted: 12 September 2023

First Online: 6 October 2023

Declarations

:

: All participants signed a paper-based informed consent to participate in the study. For participants who were physically or cognitively impaired, a legal representative signed the informed consent. The studies were authorized by the competent Ethics Committees (Corona Immunitas Zurich: BASEC Registration No 2020 − 01247; SwissDEM: BASEC Registration No 2017–02181; COV-RISK: BASEC Registration No 2020 − 01572).All methods were carried out in accordance with relevant guidelines and regulations.

: Not applicable.

: The authors have no conflicts of interests to declare.