1. Department of Otolaryngology, Japan.
2. Department of Cell Science, Institute of Biomedical Sciences, Japan.
3. School of Medicine, Fukushima Medical University, Fukushima City, the Department of Pharmacology, Keio University School of Medicine, Tokyo, Japan.
4. First Department of Physiology, Japan.
5. Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.