1. Faculty of Economics, Shimonoseki City University, Shimonoseki 751-8510, Japan.
2. Faculty of Food and Nutrition, Kyushu Nutrition Welfare University, Kitakyushu 803-8511, Japan.
3. Community Health Division, Council of Social Welfare, Bungo Ono City 879-7153, Japan.
4. Research Promotion Division, Fukuoka University, Fukuoka 814-0180, Japan.
5. NPO Clinical Hematology Oncology Treatment Study Group, Fukuoka 819-0030, Japan.