1. Research Division, Maritime Self-Defense Force Undersea Medical Center, Tauraminatocho, Yokosuka 237-0071, Japan
2. Clinical Division, Japan Self-Defense Force Yokosuka Hospital, Tauraminatocho, Yokosuka 237-0071, Japan
3. Department of Integrative Physiology and Bio-Nano Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa 359-8513, Japan