(all unremunerated)

1999 - Visiting professor at the Sidney Kimmel Cancer Institute at Johns Hopkins Medical Institutions (JHMI) in Baltimore, USA
2005 - Distinguished professor of Utrecht University
2019 - Vice-chair of the Advisory Board of the Dutch Cancer Foundation (KWF)
2019 - Member of the Scientific Advisory Board Prinses Maxima Center / UMC Utrecht
2020 -2022 Member of the Advisory Board of the theme Prevention of the strategic alliance EWUU
2021 - Member of the Steering Committee of the UMC Utrecht Center of Excellence of the Focused Ultrasound Foundation (FUS)
2022 - Member of the Supervisory Board of the Center for Unusual Collaborations , CUCO , of the EWUU alliance
2024 - Member of the Advisory Board of the Chris Gips Foundation