1. Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8528, Japan
2. Hiroshima Agricultural Mutual Aid Association, Hiroshima 732-0052, Japan
3. Ehime Agricultural Mutual Aid Association, Seiyo, Ehime 797-1211, Japan
4. e-animal Corporation, Gifu 501-2122, Japan
5. Farm Animal Veterinary Nursing, Okayama University of Science, Imabari Ehime 794-8555, Japan