1. Epidemiology Unit and Cancer Registry of Girona (UERCG) of the Plan for Oncology of the Catalan Government; Biomedical Research Institute (IdIBGi) Girona 17005; Spain
2. Tarragona Cancer Registry; Foundation Society for Cancer Research & Prevention; Reus 43201, IISPV; Spain
3. School of Public Health; University of Alberta; Edmonton, Alberta; Canada T6G 2T4