Hiroyuki Matsuda1, Noboru Fukuda, Takahiro Ueno, Yoshiko Tahira, Hirohito Ayame, Wen Zhang, Toshikazu Bando, Hiroshi Sugiyama, Satoshi Saitô, Koichi Matsumoto, Hideo Mugishima, Kazuo Serie
1Department of Internal Medicine, Nihon University School of Medicine, Ooyaguchi-kami 30-1, Itabashi-ku, Tokyo 173-8610, Japan.