Fig. 1

A diagram showing the use of anticoagulation and/or antiplatelet agents in the management of each patient. Each bar shows time of follow-up each therapy was used from point of initial diagnosis through to most recent follow-up. Episodes of Bleeding (B) are marked with a red box, Episodes of Arterial (A) and Venous (V) thrombosis are marked with a cream box and transformation to Myelofibrosis (MF) is marked with a black box. VKA = Vitamin K antagonist, ASA = Aspirin, VKA/ASA = Dual Vitamin K antagonist and Aspirin therapy