Thyroid ultrasound findings in children from three Japanese prefectures: Aomori, Yamanashi and Nagasaki. oleh Naomi Hayashida, Misa Imaizumi, Hiroki Shimura, Noriyuki Okubo, Yasushi Asari, Takeshi Nigawara, Sanae Midorikawa, Kazuhiko Kotani, Shigeyuki Nakaji, Akira Otsuru, Takashi Akamizu, Masafumi Kitaoka, Shinichi Suzuki, Nobuyuki Taniguchi, Shunichi Yamashita, Noboru Takamura, Investigation Committee for the Proportion of Thyroid Ultrasound Findings