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