· Training of general practitioners (boys and men in the surgery, how to deal with sexual abuse and harassment in the surgery).
· Workshop for nurses and therapists in Psychiatry.
· Offering advice in campaigns in Holland and Austria about drugs, aggression and night life.
· Contributions, lectures, advice regarding AIDS prevention. Contribution EU AIDS-conference Canterbury EIC Prevention Aids Young Males (1997)
· Contributions to 3 WHO (Europe) conferences about issues regarding young people and health (on Smoking and Drugs 1992; on Food and Nutrition Behaviour 1993 and on Sexuality 1994)