1. Advanced Modeling and Applied Computing Laboratory, Department of MathematicsThe University of Hong KongPokfulam RoadHong KongPeople's Republic of China
2. Hepatobiliary and Pancreatic Surgery DivisionNational Cancer Center HospitalTokyoJapan
3. Pathology DivisionNational Cancer Center Research InstituteTokyoJapan
4. Department of SurgeryFukuoka UniversityFukuokaJapan
5. Department of Bioinformatics, Faculty of EngineeringSoka UniversityTokyoJapan
6. Division of Clinical LaboratoriesNational Cancer Center HospitalTokyoJapan