[1] Natl & Kapodistrian Univ Athens, Dept Hyg Epidemiol & Med Stat, Med Sch, 75 Mikras Asias Str, Athens 11527, Greece
[2] Yale Sch Med, Yale Sch Publ Hlth Canc Prevent & Control, Yale Comprehens Canc Ctr, Dept Chron Dis Epidemiol, New Haven, CT USA
[3] Univ Minnesota, Dept Pediat, Div Epidemiol & Clin Res, Minneapolis, MN 55455 USA
[4] Paris Descartes Univ, INSERM, CRESS, UMR S1153, Villejuif, France
[5] CHU Nancy, Hop Paul Brousse, AP HP, Natl Registry Childhood Canc, Nancy, France
[6] Inst Nacl Canc, Pediat Hematol Oncol Program, Rio De Janeiro, Brazil
[7] Univ Calif Los Angeles, Sch Publ Hlth, Dept Epidemiol, Los Angeles, CA 90024 USA
[8] Univ York, Dept Hlth Sci, Epidemiol & Canc Stat Grp, York, N Yorkshire, England
[9] Fred Hutchinson Canc Res Ctr, Publ Hlth Sci Div, 1124 Columbia St, Seattle, WA 98104 USA
[10] Univ Washington, Sch Publ Hlth, Dept Epidemiol, Seattle, WA 98195 USA
[11] Danish Canc Soc Res Ctr, Copenhagen, Denmark
[12] Univ Tampere, Fac Social Sci, Tampere, Finland
[13] Natl Taipei Univ Nursing & Hlth Sci, Dept Hlth Care Management, Taipei, Taiwan
[14] Int Agcy Res Canc IARC, Sect Environm & Radiat, Lyon, France
[15] CPO Piedmont, Canc Epidemiol Unit, Dept Translat Med, Novara, Italy
[16] Univ Piemonte Orientale, Novara, Italy
[17] Univ Nacl, Cent Amer Inst Studies Tox Subst IRET, Heredia, Costa Rica
[18] Univ Otago, Dunedin Sch Med, Dept Preventat & Social Med, Dunedin, New Zealand
[19] Texas Childrens Canc Ctr, Baylor Coll Med, Dept Pediat, Houston, TX USA
[20] Danish Canc Soc Res Ctr, Childhood Canc Res Grp, Copenhagen, Denmark
[21] Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA
[22] Univ Western Australia, Ctr Child Hlth Res, Telethon Inst Child Hlth Res, Perth, WA, Australia
[23] Karolinska Inst, Dept Med, Clin Epidemiol Unit, Stockholm, Sweden