Blood group type A secretors are associated with a higher risk of COVID‐19 cardiovascular disease complications oleh Tosti J. Mankelow, Belinda K. Singleton, Pedro L. Moura, Christian J. Stevens‐Hernandez, Nicola M. Cogan, Gyongyver Gyorffy, Sabine Kupzig, Luned Nichols, Claire Asby, Jennifer Pooley, Gabriella Ruffino, Faroakh Hosseini, Fiona Moghaddas, Marie Attwood, Alan Noel, Alex Cooper, David T. Arnold, Fergus Hamilton, Catherine Hyams, Adam Finn, Ashley M. Toye, David J. Anstee