SARS-CoV-2 IgG seroprevalence in blood donors located in three different federal states, Germany, March to June 2020
Fischer, Bastian and Knabbe, Cornelius and Vollmer, Tanja, Eurosurveillance, 25, 2001285 (2020), https://doi.org/10.2807/1560-7917.ES.2020.25.28.2001285