scientific article
author: Koji Muroya, Masayo Kagami, Tsutomu Ogata, Reiko Horikawa, Keiko Matsubara, Kazuhiko Nakabayashi, Shinichiro Sano, Tomoko Fuke, Kazuki Yamazawa, Seiji Mizuno, Toshiro Nagai, Tomonobu Hasegawa, Yoko Miyoshi, Tatsuro Kondoh, Chikahiko Numakura, Kenichiro Hata