1. Department of Clinical Laboratory, Hyogo Cancer Center, Hyogo, Japan
2. Kobe Research Projects on Thrombosis and Haemostasis, Kobe, Japan
3. Kobe Co-Medical College, Kobe, Japan
4. Department of Pathology, Loyola University Medical Center, Maywood, IL, USA
5. Mitsubishi Chemical Medience Corporation, Chiba, Japan