1. From the Department of Haematology, Oxford University Hospitals NHS Foundation Trust, Oxford (S.P., A.R.), the Department of Haematology, University College London Hospitals NHS Foundation Trust and Cardiometabolic Programme–National Institute for Health Research University College London Hospitals–Biomedical Research Centre (M.S., B.C.), the Thrombosis and Haemophilia Centre, Guy’s and St. Thomas’ NHS Foundation Trust and King’s College London (B.J.H.), and the Department of Statistical Science,...