Addendum to British Society for Haematology Guidelines on Investigation and Management of Antiphospholipid syndrome, 2012 (Br. J. Haematol. 2012; 157: 47–58): use of direct acting oral anticoagulants. (13th January 2020) - Arachchillage, Deepa R. J.; Gomez, Keith; Alikhan, Raza; Anderson, Julia A. M.; Lester, Will; Laffan, Mike; ,