1. Research assistant of forensic medicine, research assistant of forensic toxicology, professor of forensic toxicology, university lecturer of pathology, professor of forensic medicine, and professor and chief of department of forensic medicine, Heinrich-Heine-University Düsseldorf. Düsseldorf, DE.
2. Institute of Legal Medicine University of Düsseldorf Moorenstr. 5 D-4000 Düsseldorf 1, DE.