1. Kyowa Hi Foods Co. Ltd., 8-5 Shinkawa, 1-chome, Cyuo-ku, Tokyo 104-0033,1
2. Tsukuba Research Laboratories, Kyowa Hakko Kogyo Co. Ltd., 2 Miyukigaoka, Tsukubashi, Ibaraki-ken, 305-0841,2
3. Tokyo Research Laboratories, Kyowa Hakko Kogyo Co. Ltd., 3-6-6 Asahimachi, Machidashi, Tokyo 194-8533,3 and
4. Kyowa Hakko Kogyo Co. Ltd., 1-6-1 Ohtemachi, Chiyoda-ku, Tokyo 100-8185,4 Japan