Ohyama Atsuko investigator.; Ohashi Yasuo investigator.; Harada Masaoki investigator.; Yamamoto T investigator.; Miyakubo M investigator.; Fujizuka Y investigator.; Akimoto T investigator.; Mitsuhashi N investigator.; Ishikawa H investigator.; Matsuoka N investigator.; Sumi M investigator.; Ito Y...