1. Department of Diagnostic and Therapeutic Radiology, Faculty of Medicine Ramathibodi Hospital Bangkok Thailand
2. Department Radiology David Geffen School of Medicine at UCLA Los Angeles California USA
3. Liver cancer center, Pfleger liver institute, Department of Surgery David Geffen School of Medicine at UCLA Los Angeles California USA
4. Department of Surgery, Faculty of Medicine Siriraj Hospital Mahidol University Bangkok Thailand
5. Department of Radiology Dongguk University Ilsan Hospital Goyang Korea
6. Department of Biomathematics UCLA Los Angeles California USA