Doctor of Medicine, Catholic University, Nijmegen, Netherlands, 1978. Doctor of Philosophy, University of Amsterdam, 1998.
Occupational physician Occupational Health Service Nijmegen, 1979—1983, Occupational Health Service Amsterdam, 1984—1998. Researcher, senior lecturer Coronel Institute, Academy Medical Center, since 1983. Researcher, project leader SKB, since 1998.
Chairman committee effects of vibration on humans Netherlands Normalisation Institute, Delft, Netherlands, 1990—2002. Task leader work package 2: dose-response relationships between vibration exposures and injury. Vibration Injury Network (European Union-Concerted Action under Biomed II), Brussels, 1998—2001.
Member executive board of international commission on occupational health -science committee on health services research and evaluation ICOH, Kuopio, Finland, since 1992. Chair science committee Dutch Association for Occupational Medicine, Eindhoven, Netherlands, since 1992. Member advisory committee work and health Dutch Council for Health Research, The Hague, Netherlands, since 2001.
Vice-chairman National Committee Complaints about pre-employment meds., Utrecht, Netherlands, since 2002.
Member, medical adviser road racing bicycling club Fc Trappist, Amsterdam, 1989—2002. Fellow: Dutch Association for Occupational Medicine.
Life partner Ade Scipio Blume. Children: Janneke, Lies, Meike.