Ongoing … Part-time appointment at the Netherlands Cancer Institute for clinical research and teaching
06-2011 Retirement of the Netherlands Cancer Institute, and Professor-emeritus University of Amsterdam; part-time continuing research and teaching
09-2009 Chairman-emeritus Department of Head&Neck Oncology and Surgery, the Netherlands Cancer Institute, Amsterdam
2003 Professor, Institute of Phonetic Sciences, University of Amsterdam (part-time)
2001_2009 Consultant Head&Neck Oncology, ENT Department Academic Medical Center, University of Amsterdam
1988_2009 Chairman Department of Head&Neck Oncology and Surgery, the Netherlands Cancer Institute, Amsterdam
1984_1991 Consultant Head&Neck Oncology, ENT‑Department Academic Medical Center, University of Amsterdam
1979_1992 Consultant Pediatric Head and Neck Oncology, Emma Children's Hospital, University of Amsterdam
1978_ 2011 Otolaryngologist‑Head and Neck Surgeon, Netherlands Cancer Institute, Amsterdam
1977_1978 Head and Neck fellowship, Department of Otolaryngology‑Head and Neck Surgery, Netherlands Cancer Institute, Amsterdam. Supervisors: W.A. Horree, MD, Otolaryngologist-Head and Neck Surgeon and Prof. Dr. EA van Slooten, Oncologic Surgeon
1978 Specialist registration in Oto-Rhino-Laryngology (January 1)
1974_1978 Resident Otolaryngology, University of Amsterdam (Prof. Dr. LBW Jongkees)
1976 PhD Thesis: Immunological aspects of herpes viruses in human neoplasia, Supervisor: Prof. Dr. F Dekking, University of Amsterdam; Publisher: Mondeel, Amsterdam.
1973 Visiting Research Scientist (4 months), Department for Tumorbiology, Karolinska Institute, Stockholm, Sweden (Prof. G Klein),
1972_1974 Research Project: `Immunological aspects of herpes viruses in human neoplasia' Netherlands Cancer Institute (Dr. JHM Hilgers), International Agency for Cancer Research (IARC) Lyon, France (Dr. G de Thé), Department Medical Virology, University of Amsterdam (Prof. Dr. F Dekking)
1972 Resident/House Officer, The Netherlands Cancer Institute (Prof. Dr. FJ Cleton)
1972 Medical Degree, University of Utrecht
1965 Gymnasium ß, St Jan's Lyceum, Hoensbroek
Managerial activities
2011 - 2018 SBT Amsterdam - Board of Trustees (SBT: Stichting Bijzondere Tandheelkunde (Foundation/Center for Special Needs Dentistry))
1990 - 2005 Netherlands Cancer Institute - Medical Staff appointee in the planning and building committees for the new outpatient clinic and treatment center (opening 1995) and the new hospital and radiotherapy center (opening 2003)
1982 ‑ 1986 Netherlands Cancer Institute - Secretary Board Medical Staff