1. Department of Otolaryngology, School of Medicine; Fukushima Medical University; Fukushima City Japan
2. Department of Cell Science; Institute of Biomedical Sciences, School of Medicine, Fukushima Medical University; Japan
3. Department of Cellular and Integrative Physiology; School of Medicine, Fukushima Medical University; Japan
4. Department of Bioartificial Organs; Institute for Frontier Medical Sciences, Kyoto University; Japan