1. Department of Community Medicine and Medical Science, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan.
2. Department of Gastroenterology and Oncology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan.
3. Higashi Sapporo Hospital, Sapporo, Japan.
4. Department of Molecular Pharmacology and Oncology, Gunma University Graduate School of Medicine, Maebashi, Japan.
5. Department of Clinical Laboratory Science, School of Medical Technology, Health Sciences University of Hokkaido, Sapporo, Japan.
6. Department of Physical Therapy, Sapporo Medical University School of Medicine, Sapporo, Japan.