Born in 1956 and raised in Canada and Switzerland. Medical school at University of Basel/Switzerland. Specialist degree in Psychiatry and Psychotherapy 1988. Psychotherapeutic training in Guided Affective Imagery Therapy, Systemic Couple and Family Therapy and in Psycholytic Therapy. In private practice since 1988. Special interest in altered states of consciousness and psychedelic substances for more than 20 years. Board member of the Swiss Medical Association for Psycholytic Therapy (SAePT). Principle investigator of the Swiss phase II MDMA/PTSD pilot study (since 2006).