Convalescent plasma for COVID-19: male gender, older age and hospitalisation associated with high neutralising antibody levels, England, 22 April to 12 May 2020
Mehew, Jennifer and Johnson, Rachel and Roberts, David and Harvala, Heli, Eurosurveillance, 25, 2001754 (2020), https://doi.org/10.2807/1560-7917.ES.2020.25.45.2001754