1. Standardization of the one-stage prothrombin time for the control of anticoagulant therapy;Biggs;Br Med J,1967
2. A national standard for anticoagulant therapy The Manchester comparative reagent;Poller;Lancet,1967
3. The interpretation of prothrombin time results: a national survey;Poller;Br J Haematol,1969
4. The system for laboratory control of oral anticoagulant therapy using the British Comparative Thromboplastin;Thomson;J Med Lab Technol,1970
5. Draft report of a collaborative study of two thromboplastins (including the use of common abnormal plasma);Bangham;Thromb Diath Haemorrh,1970