Estimation of Effective Dose from External Exposure in The Six Prefectures adjacent to Fukushima PrefectureHirokazu Miyatake, Nobuaki Yoshizawa, Sachiko Hirakawa, Kana Murakami, Mari Takizawa, Masaki Kawai, Osamu Sato, Shunji Takagi and Gen SuzukiEPJ Web Conf., 153 (2017) 08006DOI: https://doi.org/10.1051/epjconf/201715308006