Shigeyuki Nagata*, Kengo Fukuzawa, Yukio Iwashita, Akira Kabashima, Tadahiko Kinoshita, Kenzo Wakasugi and Yoshihiko Maehara
* Corresponding author: Shigeyuki Nagata ngkkd637@yahoo.co.jp
Nutrition Journal 2009, 8:24 doi:10.1186/1475-2891-8-24