E Cardis, head of radiation group,1 M Vrijheid, scientist,1 M Blettner, professor,2 E Gilbert, expert,3 M Hakama, research professor,4 C Hill, epidemiologist,5 G Howe, professor of epidemiology,6 J Kaldor, deputy director,7 C R Muirhead, group leader epidemiology,8 M Schubauer-Berigan, senior research epidemiologist, industrywide studies branch,9 T Yoshimura, director,10 F Bermann, medical counsel