This author has not been identified. Look up 'Ryoichi Kawahara' in GoogleThis author has not been identified. Look up 'Keisuke Ishibashi' in GoogleThis author has not been identified. Look up 'Toshiyuki Hirano' in GoogleThis author has not been identified. Look up 'Hiroshi Saito' in GoogleThis author has not been identified. Look up 'Hisaki Ohara' in GoogleThis author has not been identified. Look up 'Daisuke Satoh' in GoogleThis author has not been identified. Look up 'Shoichiro Asano' in GoogleThis author has not been identified. Look up 'Jun Matsukata' in Google