Cluster 264: normalized inr international ratio uln coagulation anticoagulation warfarin anticoagulants blood 
Cluster 844: anticoagulation therapeutic applies inr aptt normalized ratio thromboplastin activated international 
Cluster 874: time aptt thromboplastin activated partial inr normalized ratio prothrombin international 
Cluster 1403: prothrombin inr normalized pt ratio international time uln normal seconds 
Cluster 2235: time inr ptt thromboplastin normalized partial ratio international prothrombin pt 
Cluster 2279: inr warfarin heparin normalized ratio international stable ptt time thromboplastin