1. Division of Medical Oncology, Center for Immuno‑oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei 11217, Taiwan, R.O.C.
2. National Institute of Cancer Research, National Health Research Institutes, Tainan 70456, Taiwan, R.O.C.
3. Department of Pathology, Chi‑Mei Medical Center, Tainan 71004, Taiwan, R.O.C.
4. Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115, USA