1 Department of Orthopedic Surgery, Karatsu Red Cross Hospital, 1-5-1 Futago, Karatsu, Saga, 847-8588, Japan. takaomi_920@yahoo.co.jp.
2 Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan.
3 Department of Orthopedic Surgery, Karatsu Red Cross Hospital, 1-5-1 Futago, Karatsu, Saga, 847-8588, Japan.