The Belgian Improvement Study in Oral Anticoagulant Therapy: a

randomized clinical trial We read with great interest the article by Claes et al. about The Belgian Improvement Study on Oral Anticoagulant Therapy. The randomized clinical trial compares different interventional models to improve the quality of oral anticoagulant therapy in general practitioners ’ (GP’s) practice who mainly manage the control of anticoagu-lation.1 In Hungary, arterial and venous vessel diseases have a great impact on mor-bidity and mortality data, so the quality of oral anticoagulation is essential. Last year, we published a retrospective survey2 on the use of an oral anticoagulant