1. Institute of Global Health, Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
2. Swiss Cancer League, 3001 Bern, Switzerland
3. Clinique des Grangettes, Hirslanden, 1224 Geneva, Switzerland
4. Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
5. Geneva Cancer Registry, Institute of Global Health, Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland