1. Support Center for Women Health Care Professionals and Researchers; Tokyo Women's Medical University; Tokyo Japan
2. Department of Medicine and Gastroenterology; Tokyo Women's Medical University; Tokyo Japan
3. Department of Life Science and Medical Bioscience; Waseda University; Tokyo Japan
4. Department of Microbiology and Immunology; Tokyo Women's Medical University; Tokyo Japan
5. Institute of Laboratory Animals; Tokyo Women's Medical University; Tokyo Japan
6. Department of Pathology; Tokyo Women's Medical University; Tokyo Japan