1. Effect of antihemophilic factor on one-stage clotting tests: a presumptive test for hemophilia and a simple one-stage antihemophilic assay procedure;Langdell;J Lab Clin Med,1953
2. Measurement of factor VIII: a potential risk factor for vascular disease;Brand;Arch Pathol Lab Med,1993
3. Quality control and factor VIII assays;Preston;Haemophilia,1998
4. Determination of factor coagulant activities; Approved guideline;National Committee for Clinical Laboratory Standards (NCCLS USA);NCCLS Document H-48-A,1997
5. The rare coagulation disorders--review with guidelines for management from the United Kingdom Haemophilia Centre Doctors’ Organisation;Bolton-Maggs;Haemophilia,2004