1. Institute of Forensic Medicine, Forensic Toxicology; Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg; Albertstr. 9 79104 Freiburg Germany
2. Hermann Staudinger Graduate School; University of Freiburg; Hebelstraße 27 79104 Freiburg Germany
3. Institute of Forensic Medicine, Forensic Toxicology; Medical Center - University of Rostock; St.-Georg-Str. 108 18055 Rostock Germany
4. Clinical Chemistry Laboratory, medbo® - District Hospital for Mental Health; Universitätstraße 84 93053 Regensburg Germany
5. School of Chemistry; The University of Sydney; Eastern Avenue NSW 2006 Australia
6. Department of Pathology; Stanford University School of Medicine; 300 Pasteur Drive, Lane 235 Stanford CA 94305 USA