Proceedings: ICSH-ISTH International Anticoagulant Control Study. II. Design and findings.
D000925:Anticoagulants / Q000592:standards*; D005612:Freeze Drying; D006801:Humans; D007391:International Cooperation; D011517:Prothrombin Time / Q000592:standards; D013925:Thromboplastin / Q000592:standards
D000925:Anticoagulants; D013925:Thromboplastin