1. First Department of Internal Medicine, Nagoya University School of Medicine,
2. Department of Biochemistry, School of Dentistry, Aichi‐Gakuin University,
3. Department of Laboratory Medicine,
4. Research Institute for Disease Mechanism and Control, Nagoya University School of Medicine,
5. Department of Haematology, Jichi University,
6. Fourth Department of Internal Medicine, Tokai University School of Medicine,
7. Biopharmaceutical Department, Fuji Chemical Industries Ltd, Toyama, Japan