Master in Biology, State University Leiden, 1980. Doctor of Philosophy, University Amsterdam, 1989.
Science staff member Radiobiol. Institute, Netherlands Organization Applied Science Research, Rijswijk, Netherlands, 1980—1996. Visiting scientist Department Experimental Radiotherapy, Doctor of Medicine Anderson Cancer Center, Houston, Texas, 1989—1990.
Science secretary Health Council Netherlands, since 1991, International EMF Project, World Health Organization, Geneva, 2002—2007. Secretary Working Group Clinical Experimental Therapythe Dutch Cancer Society, 1989—1991. Member Science Committee Institute Applied Radiobiology & Immunology The Netherlands Organization, 1990—1991.
Science secretary Extremely Low Frequency Electromagnetic Fields Committee, Health Council Netherlands, 1992, Microwaves & Radiofrequency Radiation Committee, Health Council Netherlands, 1995—1997. Member International Advisory Committee World Health Organization International EMF Project, since 1995. Science secretary preparatory committee Extremely Low Frequency Fields, Health Council Netherlands, 1997.
Member Research Recommendations Committee World Health Organization International EMF Project, since 1997. Secretary Non-Ionizing Radiation Section, Netherlands Society Radiological Protection, 1998—2000. Science secretary Extremely Low Frequency Fields Committee Health Council Netherlands, 1997—2002, Standing Committee Radiation & Health, Health Council Netherlands, since 1998, Electromagnetic Fields Committee, Health Council Netherlands, since 2000.
National representative Netherlands, Cooperation in Science and Technology 281, 2001—2007. Council member European Bioelectromagnetics Association, 2003—2005. Member World Health Organization Task Group, 2004.
Science editor World Health Organization Environmental Health Criteria, 2004—2005. Member World Health Organization Task Group, 2005, ICNIRP, 2005—2007. Vice president European Bioelectromagnetics Association, 2005—2008.
Science editor World Health Organization Environmental Health Criteria 238 Extremely Low Frequency Fields, 2006—2007. Member Working Group WP6EMF-NET, 2006—2008, Standing Committee II Biology, International Communications Non-ionizing Radiation Protection, since 2006. Council member European Bioelectromagnetics Association, 2008.
National representative Netherlands, Cooperation in Science and Technology BM0704, since 2008. Member Emerging EMF Technologies & Health Risk Management, since 2008. Invited expert Science Committee Emerging & Newly Identified Health Risks, 2008—2009.
Member European Commission, since 2009, Swedish Independent Expert Group EMF, since 2010, Main Committee International Communications Non-Ionizing Radiation Protection, since 2010.
Board member Vlaardingen History Society, since 1990, editor-in-chief, since 1995. Member of Institute of Electrical and Electronics Engineers (member main committee), Swedish Independent Expert Group, International Committee Electromagnetic Safety, European Bioelectromagnetics Association (council member 2003-2005, since 2008, vice president 2006-2008), Bioelectromagnetics Society, Arbeitskreis Nicht-ionisierende Strahlungthe Fachverband für Strahlenschutz, Germany, Netherlands Electrotech. Committee (communications 211 member), Netherlands Society Radiobiology, Netherlands Society Radiological Protection, Non-Ionizing Radiation Section.