1. Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama City, Japan,
2. Department of Pathology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama City, Japan,
3. Department of Pathology, National Hospital Organization Fukuyama Medical Center, Fukuyama City, Japan,
4. Department of Respiratory Medicine, National Hospital Organization Fukuyama Medical Center, Fukuyama City, Japan,
5. Department of Pathology, Kurashiki Central Hospital, Kurashiki City, Japan,
6. Department of Hematology/Oncology, Kurashiki Central Hospital, Kurashiki City, Japan