1. Department of Bacteriology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
2. Department of School Health Sciences, Aichi University of Education, Kariya, Japan
3. Faculty of Wellness, Department of Nutrition, Shigakkan University, Ohbu, Japan
4. Department of Safety Research on Blood and Biological Products, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan