1. Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland (K.S., K.L.M.)
2. Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland (R.P., C.B., M.Z., J.R.)
3. Institute of Evolutionary Medicine and Department of History, University of Zurich, Zurich, Switzerland (J.F.)
4. Federal Statistical Office, Neuchâtel, Switzerland (C.J., R.W.)
5. Centre for Research on Pandemics & Society, Oslo Metropolitan University, Oslo, Norway (S.M.).