1. Department of PathologyUniversity of PittsburghPittsburgh PA
2. PECEM, Facultad de MedicinaUniversidad Nacional Autónoma de MéxicoMexico City Mexico
3. Department of Hepatobiliary SurgeryPeking University People's HospitalBeijing China
4. Department of Anatomic Pathology, Graduate School of Medical SciencesKyushu UniversityFukuoka Japan
5. Department of Surgery and Science, Graduate School of Medical SciencesKyushu UniversityFukuoka Japan
6. Department of SurgeryChildren's Hospital of Pittsburgh of the University of Pittsburgh Medical CenterPittsburgh PA
7. McGowan Institute for Regenerative MedicineUniversity of PittsburghPittsburgh PA