Assessing relative COVID-19 mortality during the second wave: a prospective Swiss population-based study.
Sandra SiegfriedMatthias BoppHuldrych GünthardOlivia KeiserCaroline E WeibullMichael CrowtherTorsten HothornPublished in: BMJ open (2021)
The protocol for this study was registered on 3 December 2020 at https://osf.io/gbd6r.