1. Early Detection, Prevention and Infections Branch, International Agency for Research on Cancer (IARC/WHO) , Lyon , France
2. Department of Infectious Diseases, Public Health Service Amsterdam , Amsterdam, the Netherlands
3. Department of Epidemiology and Data Science, Amsterdam University Medical Centre , Amsterdam, the Netherlands
4. Gastroenterology Department, Fernando Pessoa Teaching Hospital , São Cosme , Portugal
5. Precancerous Lesions and Early Cancer Management Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto) , Porto , Portugal