| Affiliation: | 1. Department of General Practice, CAPHRI School for Public Health and Primary Care, Maastricht University Medical Centre, PO Box 616, 6200 MD Maastricht, Maastricht, the Netherlands;2. Cancer Research UK Health Behaviour Research Centre, Department of Epidemiology and Public Health, University College London, London, UK. E‐mail: d.kotz@maastrichtuniversity.nl;3. Cancer Research UK Health Behaviour Research Centre, Department of Epidemiology and Public Health, University College London, London, UK. E‐mail: d.kotz@maastrichtuniversity.nl |
