1Servei d'Epidemiologia i Registre del Càncer, Institut Català d'Oncologia, Hospitalet de Llobregat, Barcelona, Spain, . Victor Moreno, M.D., Servei d'Epidemiologia i Registre del Càncer, Institut Català d'Oncologia, Hospitalet de Llobregat, Barcelona, Spain, was also an author.
2International Agency for Research on Cancer, Lyons, France, . Victor Moreno, M.D., Servei d'Epidemiologia i Registre del Càncer, Institut Català d'Oncologia, Hospitalet de Llobregat, Barcelona, Spain, was also an author.
3Free University Hospital, Amsterdam, . Victor Moreno, M.D., Servei d'Epidemiologia i Registre del Càncer, Institut Català d'Oncologia, Hospitalet de Llobregat, Barcelona, Spain, was also an author.
4Johns Hopkins University, Baltimore, . Victor Moreno, M.D., Servei d'Epidemiologia i Registre del Càncer, Institut Català d'Oncologia, Hospitalet de Llobregat, Barcelona, Spain, was also an author.
5Philippine General Hospital, University of the Philippines, Manila, the Philippines, . Victor Moreno, M.D., Servei d'Epidemiologia i Registre del Càncer, Institut Català d'Oncologia, Hospitalet de Llobregat, Barcelona, Spain, was also an author.
6Faculty of Medicine, Prince of Songkla University, Hat-Yai, Thailand, . Victor Moreno, M.D., Servei d'Epidemiologia i Registre del Càncer, Institut Català d'Oncologia, Hospitalet de Llobregat, Barcelona, Spain, was also an author.
7Proyecto Epidemiológico Guanacaste, San José, Costa Rica, . Victor Moreno, M.D., Servei d'Epidemiologia i Registre del Càncer, Institut Català d'Oncologia, Hospitalet de Llobregat, Barcelona, Spain, was also an author.