Affiliation: | 1. Institute of Biochemistry, German Sport University Cologne, K?ln, Germany;2. Institute of Forensic Medicine, Ludwig‐Maximilians‐University Munich, München, Germany;3. Forensic Science Institute, Federal Criminal Police Office, Unit Central Analytics II, Wiesbaden, Germany;4. Forensic and Investigative Science, C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA;5. LGC, Teddington, UK;6. isolab GmbH, Laboratorium für Stabile Isotope, Schweitenkirchen, Germany |