1. Department of Public Health Erasmus MC‐University Medical Center Rotterdam Rotterdam The Netherlands
2. Division of Cancer Epidemiology German Cancer Research Center (DKFZ) Heidelberg Germany
3. Translational Lung Research Center (TLRC) Heidelberg Member of the German Center for Lung Research (DZL) Heidelberg Germany
4. Department of Health Sciences Brock University St. Catharines Ontario Canada