Atsuko Sadakane,^1,* Reid D. Landes,² Ritsu Sakata,¹ Jun Nagano,³ Roy E. Shore,⁴ Kotaro Ozasa<sup>1

1</sup>aDepartment of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan
²bDepartment of Biostatistics, University of Arkansas for Medical Science, Little Rock, Arkansas
³cDepartment of Faculty of Arts and Science, Kyushu University, Fukuoka, Japan
⁴dDepartment of New York University School of Medicine, New York, New York

^*Address for correspondence: Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan, 5-2 Hijiyama Park, Minami-ku, Hiroshima 7320815, Japan; email: sadakane@rerf.or.jp.