1. Department of Hematology, National Hospital Organization Iwakuni Clinical Center, Iwakuni, Japan,
2. Department of Hematology, Oncology, and Respiratory Medicine, Okayama University Medical School, Okayama, Japan,
3. Department of Pathology, National Hospital Organization Iwakuni Clinical Center, Iwakuni, Japan,
4. Department of Pathology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan,
5. Department of Respiratory Medicine, National Hospital Organization Iwakuni Clinical Center, Iwakuni, Japan