Kampf Günter, Kulldorff Martin
Institute for Hygiene and Environmental Medicine, University Medicine Greifswald, Greifswald 17475, Germany.
Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Harvard Medical School, Boston, MA, USA.
Lancet. 2021 Feb 13;397(10274):576-577. doi: 10.1016/S0140-6736(21)00193-8. Epub 2021 Feb 4.