1. Department of Anatomy, Shiga University of Medical Science, Otsu, Shiga;
2. Department of Social and Behavioral Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima;
3. Department of Anatomy, Sapporo Medical University, Sapporo, Japan
4. Daiichi Towakai Hospital, Takatsuki, Osaka;
5. Department of Bioorganic Chemistry, Faculty of Pharmaceutical Sciences, Hokuriku University, Kanazawa;