1. Section of Anesthesiology and Clinical Physiology; Division of Oral Health Science; Graduate school of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo; Japan
2. Center for Sensory-Motor Interaction (SMI); Department of Health Science and Technology; Faculty of Medicine; Aalborg University; Aalborg; Denmark
3. Department of Dental Anesthesiology; Tsurumi University; Yokohama; Japan