This author has not been identified. Look up 'Nicolas Schweighofer' in GoogleThis author has not been identified. Look up 'K. Shishida' in GoogleThis author has not been identified. Look up 'Cheol E. Han' in GoogleThis author has not been identified. Look up 'Yasumasa Okamoto' in GoogleThis author has not been identified. Look up 'Saori C. Tanaka' in GoogleThis author has not been identified. Look up 'Shigeto Yamawaki' in GoogleThis author has not been identified. Look up 'Kenji Doya' in Google