Palareti, G Oral anticoagulant therapy control: evidence that INR expression improves the inter-laboratory comparability of results--the Bologna oral anticoagulant control exercise. [electronic resource] - Thrombosis and haemostasis Oct 1987 - 905-10 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0340-6245 Subjects--Topical Terms: Administration, OralAnticoagulants--administration & dosageHumansItalyProthrombin TimeQuality ControlReference StandardsThromboplastin--standards