Li, Ming, Hirano, Ken-ichi, Ikeda, Yoshihiko, Higashi, Masahiro, Hashimoto, Chikako, Zhang, Bo, Kozawa, Junji, Sugimura, Koichiro, Miyauchi, Hideyuki, Suzuki, Akira, Hara, Yasuhiro, Takagi, Atsuko, Ikeda, Yasuyuki, Kobayashi, Kazuhiro, Futsukaichi, Yoshiaki, Zaima, Nobuhiro, Yamaguchi, Satoshi, Shrestha, Rojeet, Nakamura, Hiroshi, Kawaguchi, Katsuhiro, Sai, Eiryu, Hui, Shu-Ping, Nakano, Yusuke, Sawamura, Akinori, Inaba, Tohru, Sakata, Yasuhiko, Yasui, Yoko, Nagasawa, Yasuyuki, Kinugawa, Shintaro, Shimada, Kazunori, Yamada, Sohsuke, Hao, Hiroyuki, Nakatani, Daisaku, Ide, Tomomi, Amano, Tetsuya, Naito, Hiroaki, Nagasaka, Hironori, Kobayashi, Kunihisa, and on behalf of the Japan TGCV study group