1 Foundation National Institute for Cancer Epidemiology and Registration (NICER), University of Zurich, Zurich, Switzerland. anita.feller@nicer.org.
2 Cancer Registry Zurich and Zug, University Hospital Zurich, Zurich, Switzerland.
3 Ticino Cancer Registry, Instituto cantonale di patologia, Locarno, Switzerland.
4 Geneva Cancer Registry, Institute of Global Health, University of Geneva, Geneva, Switzerland.
5 Vaud Cancer Registry, Centre for Primary Care and Public Health (Unisanté), Feller et al. BMC Cancer (2020) 20:51 Page 13 of 15 University of Lausanne, Lausanne, Switzerland.
6 Neuchâtel and Jura Cancer Registry, Neuchâtel, Switzerland.
7 Cancer Registry East Switzerland, St. Gallen, Switzerland.
8 Cancer Registry Grison & Glarus, Chur, Switzerland.
9 Valais Cancer Registry, Health Observatory Valais, Sion, Switzerland.
10 Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland.
11 Cancer Registry Basel-Stadt & Basel-Landschaft, Basel, Switzerland.
12 Foundation National Institute for Cancer Epidemiology and Registration (NICER), University of Zurich, Zurich, Switzerland.
13 Unit of Cancer Survivorship, Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany.