His research has been funded by the Canadian Institutes of Health Research (CIHR), the US National Institutes of Health, National Cancer Institute of Canada, Canadian Cancer Society Research Institute, Fonds de la recherche en santé du Québec (FRSQ), and Cancer Research Society. As of late March 2023, he had published 574 scientific articles (h index: Scopus=86; Google Scholar=108) and 63 chapters, edited two books on cancer epidemiology and prevention, and co-edited 10 journal supplement issues. Many of his articles have appeared in premier biomedical journals, such as The Lancet, Journal of the American Medical Association, New England Journal of Medicine, Journal of the National Cancer Institute, British Medical Journal, and PLOS Medicine. He made 792 presentations as invited speaker or session chair in national and international conferences and in seminars in academic or clinical departments throughout the world (excluding 547 offered abstracts presented in conferences).