Work for third parties: Lid Wetenschappelijke Raad, KWF Kankerbestrijding, Lid Grant Panel, World Cancer Research Fund , Lid Raad van Toezicht, Stichting PALGA, Expert, European Food Safety Authority, Lid Review Board, Deutsche Krebshilfe, Priority Programme on Epidemiology, Lid Grant Panel, World Cancer Research Fund , Lid Raad van Toezicht, Stichting PALGA, Expert, European Food Safety Authority, Lid Review Board, Deutsche Krebshilfe, Priority Programme on Epidemiology and cancer registries, Editorial Board, Cancer Causes Control