Metzger, C. M. J. A., Lienhard, R., Seth-Smith, H. M. B., Roloff, T., Wegner, F., Sieber, J., Bel, M., Greub, G. and Egli, A. (2021) “PCR performance in the SARS-CoV-2 Omicron variant of concern?”, Swiss Medical Weekly, 151(4950), p. w30120. doi: 10.4414/SMW.2021.w30120.