1. Department of Zoology, National Science Museum
2. Laboratory of Animal Morphology and Function, Graduate School of Bioagricutural Sciences, Nagoya University
3. Department of Veterinary Anatomy, College of Bioresource Sciences, Nihon University
4. Department of Veterinary Anatomy, Obihiro University of Agriculture and Veterinary Medicine
5. Mammal Division, National Museum of Natural History, Smithsonian Institution
6. Department of Anatomy, Howard University College of Medicine