1. Behavioral Neuroscience Laboratory, Graduate School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan.
2. Department of Zoology, Faculty of Science, Kasetsart University, Bangkok, Thailand.
3. Laboratory of Animal Physiology, Nippon Veterinary and Life Science University, Tokyo, Japan.
4. Department of Laboratory Animal science, Dokkyo University School of Medicine, Tochigi, Japan.
5. Faculty of Pharmaceutical Sciences, University of Iceland, Reykjavik, Iceland.
6. Department of Experimental Medicine, University of Copenhagen, Copenhagen, Denmark.
7. Department of Veterinary Anatomy, College of Veterinary Medicine, Chonnam National University, Gwangju, Korea.