1. Biological Science Laboratories, Kao Corporation, 2-1-3 Bunka, Sumida-ku, Tokyo 131-8501, Japan
2. Health & Wellness Products Research Laboratories, Kao Corporation, 2-1-3 Bunka, Sumida-ku, Tokyo 131-8501, Japan
3. SOUSEIKAI Sumida Hospital, 1-29-1 Honjo, Sumida-ku, Tokyo 130-0004, Japan