1 Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer (IARC/WHO), 25 avenue Tony Garnier, CS 90627, Lyon CEDEX 07 69366, France. Electronic address: onyijef@iarc.who.int.
2 Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer (IARC/WHO), 25 avenue Tony Garnier, CS 90627, Lyon CEDEX 07 69366, France.
3 Research Group Aetiology and Inequalities in Childhood Cancer, Division of Childhood Cancer Epidemiology Institute of Medical Biostatistics, Epidemiology, and Informatics (IMBEI), University Medical Center Mainz, Langenbeckstraβe 1, Mainz 55131, Germany.
4 Epidemiology of Childhood and Adolescent Cancers Team, Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, Center for Research in Epidemiology and StatisticS (CRESS), Villejuif, France.
5 Department of Pediatrics, Hematology-Oncology, Baylor College of Medicine and Texas Children's Hospital Cancer Center, Houston, TX, United States.
6 Epidemiology of Childhood and Adolescent Cancers Team, Université Paris Cité and Université Sorbonne Paris Nord, Inserm, INRAE, Center for Research in Epidemiology and StatisticS (CRESS), Villejuif, France; National Registry of Childhood Cancers, Hôpital Paul Brousse, Groupe Hospitalier Universitaire Paris-Sud, Assistance Publique Hôpitaux de Paris (AP-HP), Villejuif, and Centre Hospitalier Régional Universitaire de Nancy, Vandoeuvre-lès-Nancy, France.