Proceedings: ICSH-ISTH International Anticoagulant Control Study. I. Background and co-ordination.
D000925:Anticoagulants / Q000592:standards* / Q000627:therapeutic use; D006801:Humans; D007391:International Cooperation; D011517:Prothrombin Time / Q000592:standards*; D011786:Quality Control
D000925:Anticoagulants